Course 1: Foundations: Data, Data, Everywhere, all quiz answers of this course are provided in this article from week 1 to week 5 to help students solving this exam. Show
Coursera Google Data Analytics Week 1 Quiz Answers! > Introducing data analytics. Question 1 Data analysis is the various elements that interact with one another in order to provide, manage, store, organize, analyze, and share data. True False Explanation: Data analysis is the collection, transformation, and organization of data in order to draw conclusions, make predictions, and drive informed decision-making. Question 2 In data analytics, what term describes a collection of elements that interact with one another? A data ecosystem A database The cloud environment A modelling system Explanation: Data ecosystems are made up of elements that interact to produce, manage, store, organize, analyze, and share data. Question 3 Fill in the blank: The primary goal of a data _____ is to find answers to existing questions by creating insights from data sources. engineer analyst scientist designer The primary goal of a data analyst is to find answers to existing questions by creating insights from data sources. Question 4 Select the best description of gut instinct. An intuitive understanding of something with little or no explanation Choosing facts that complement your personal experiences Manipulating data to match your intuition Using your innate ability to analyze results Explanation: Gut instinct is an intuitive understanding of something with little or no explanation. Question 5 Billings Upholstery has defined a problem it needs to solve: Find a more environmentally friendly way to produce its furniture. A data analyst gathers relevant data, analyzes it, and uses it to draw conclusions. The analyst then shares their analysis with subject-matter experts from the manufacturing team, who validate the findings. Finally, a plan is put into action. This scenario describes what process? Data-driven decision-making Identification of trends Data science Customer service Explanation: This company has put data at the heart of its business strategy in order to achieve data-driven decision-making. Question 6 What do subject-matter experts do to support data-driven decision-making? Select all that apply. Validate the choices made as a result of the data insights Collect, transform, and organize data Offer insights into the business problem Review the results of data analysis and identify any inconsistencies Explanation: Subject-matter experts can offer insights into the business problem, identify inconsistencies in the analysis, and validate the choices being made. Question 7 Sharing the results of your analysis with colleagues who are very familiar with the business problem supports what practice? Data analytics Data-driven decision-making Data management Data science Explanation: Sharing the results of your analysis with people who are familiar with the business problem is an example of data-driven decision-making. Data-driven decision-making is using facts to guide business strategy. Question 8 You read an interesting article in a magazine and want to share it in the discussion forum. What should you do when posting? Select all that apply. Make sure the article is relevant to data analytics. Check your post for typos or grammatical errors. Take credit for creating the article. Include your email address for people to send questions or comments. Explanation: Posts should be relevant to data analytics and checked for typos and grammatical errors. Coursera Google Data Analytics Week 2 Quiz Answers! > All About Analytical Thinking Question 1 Seeking out new challenges and experiences in order to learn is an example of which analytical skill? Understanding context Having a technical mindset Data strategy Curiosity Explanation: Curious people seek out new challenges, which leads to knowledge. Question 2 Understanding context is an analytical skill best described by which of the following? Select all that apply. Working with facts in an orderly manner Identifying the motivation behind the collection of a dataset Adding descriptive headers to columns of data in a spreadsheet Gathering additional information about data to understand the broader picture Explanation: Context is the condition in which something exists, such as a structure. Gathering extra information about data to understand the broader picture provides context. Question 3 A data analyst works for an appliance manufacturer. Last year, the company’s profits were down. Lower profits can be a result of fewer people buying appliances, higher costs to make appliances, or a combination of both. The analyst recognizes that those are big issues to solve, so they break down the problems into smaller pieces to analyze them in an orderly way. Which analytical skill are they using? Understanding context Data strategy A technical mindset Curiosity Explanation: They are using a technical mindset, which involves the ability to break things down into smaller steps or pieces and work with them in an orderly and logical way. Question 4 Data design is how you organize information; data strategy is the management of the people, processes, and tools used in data analysis. True False Question 5 Fill in the blank: Being able to identify a relationship between two or more pieces of data describes _____. correlation detail-oriented thinking problem-orientation visualization Explanation: Being able to identify a relationship between two or more pieces of data describes correlation. Question 6 What method involves asking numerous questions in order to get to the root cause of a problem? Inquiry Strategizing Curiosity The five whys Explanation: The five whys involves asking numerous questions in order to get to the root cause of a problem. Question 7 What method involves examining and evaluating how a process works currently in order to get it where you want it to be in the future? The five whys Data visualization Gap analysis Strategy Explanation: Gap analysis is a method for examining and evaluating how a process works currently in order to get where you want to be in the future. Question 8 Data-driven decision-making involves the five analytical skills: curiosity, understanding context, having a technical mindset, data design, and data strategy. Each plays a role in data-driven decision-making. True False Explanation: Data-driven decision-making involves curiosity, understanding context, having a technical mindset, data design, and data strategy. Coursera Google Data Analytics Week 3 Quiz Answers! > The wonderful world of data. Q1. The manage stage of the data life cycle is when a business decides what kind of data it needs, how the data will be handled, and who will be responsible for it.
Q2. A data analyst has finished an analysis project that involved private company data. They erase the digital files in order to keep the information secure. This describes which stage of the data life cycle?
Q3. In the analyze phase of the data life cycle, what might a data analyst do? Select all that apply.
Q4. Describe how the data life cycle differs from data analysis.
Q5. A company takes insights provided by its data analytics team, validates them, and finalizes a strategy. They then implement a plan to solve the original business problem. This describes which step of the data analysis process?
Q6. Fill in the blank: Spreadsheets are _____ that can be used to store, organize, and sort data.
Q7. Fill in the blank: A formula is a set of instructions used to perform a specified calculation; whereas a function is _____.
Q8. Fill in the blank: A query is used to _____ information from a database. Select all that apply.
Q9. Structured query language (SQL) enables data analysts to communicate with a database.
Q10. The graphical representation of information helps stakeholders understand data insights. Formulas and functions make this possible.
Coursera Google Data Analytics Week 4 Quiz Answers! > Set up your toolbox. Question 1 Question 1 The column attributes for rank, name, population, and county are located in which row of the following spreadsheet?
Question 2 Fill in the blank: In row 8 of the following spreadsheet, you can find the _____ of Cary.
Question 3 If a data analyst wants to list the cities in this spreadsheet alphabetically, instead of numerically, what feature can they use in column B?
Question 4 A data analyst types =POPULATION(C2:C11) to find the average population of the cities in this spreadsheet. However, they realize that have used the wrong formula. What syntax will correct this function? Type your answer below.
Question 5 In the following query, what is FROM telling the database to do?
Question 6 You are writing a query that asks a database to retrieve data about the customer with identification number 5656. The column name for customer identification numbers is customer_id. What is the correct WHERE clause syntax? Type your answer below. Question 7 A data analyst creates the following visualization to clearly demonstrate how much more populous Charlotte is than the next-largest North Carolina city, Raleigh. What type of chart is it?
Question 8 A data analyst wants to demonstrate how the population in Charlotte has increased over time. They create the chart below. What is this type of chart called?
Coursera Google Data Analytics Week 5 Quiz Answers! > Endless career possibilities. Question 1 Scenario 1, Question 1-5 You’ve just started a new job as a data analyst. You’re working for a midsized pharmacy chain with 38 stores in the American Southwest. Your supervisor shares a new data analysis project with you. She explains that the pharmacy is considering discontinuing a bubble bath product called Splashtastic. Your supervisor wants you to analyze sales data and determine what percentage of each store’s total daily sales come from that product. Then, you’ll present your findings to leadership. You know that it's important to follow each step of the data analysis process: ask, prepare, process, analyze, share, and act. So, you begin by defining the problem and making sure you fully understand stakeholder expectations. One of the questions you ask is where to find the dataset you’ll be working with. Your supervisor explains that the company database has all the information you need. Next, you continue to the prepare step. You access the database and write a query to retrieve data about Splashtastic. You notice that there are only 38 rows of data, representing the company’s 38 stores. In addition, your dataset contains five columns: Store Number, Average Daily Customers, Average Daily Splashtastic Sales (Units), Average Daily Splashtastic Sales (Dollars), and Average Total Daily Sales (All Products). Considering the size of your dataset, what’s the best way to proceed with the process and analyze steps?
Spreadsheets work well for processing and analyzing a small dataset, such as the one you’re using.
Question 2 Scenario 1 continued You’ve downloaded the data from your company database and imported it into a spreadsheet. To use the dataset for this scenario, click the link below and select “Use Template.” Link to template: Course Challenge - Scenario 1 OR If you don’t have a Google account, you can download the template directly from the attachment below. Course Challenge Dataset - Scenario 1 - Scenario 1_ Pharmacy Data - Part 1.csv Now, it’s time to process the data. As you know, this step involves finding and eliminating errors and inaccuracies that can get in the way of your results. While cleaning the data, you notice that information about Splashtastic is missing in row 16. The best course of action is to delete row 16 from your dataset so the missing data doesn’t get in the way of your results.
Question 3 Scenario 1 continued Once you’ve found the missing information, you analyze your dataset. During analysis, you create a new column F. At the top of the column, you add: Average Percentage of Total Sales - Splashtastic. In data analytics, this column label is called an attribute.
This column label is an attribute, which is a characteristic or quality of data used to label a column. Question 4 Scenario 1 continued Next, you determine the average total daily sales over the past 12 months at all stores, The range that contains these sales is E2:E39. To do this, you use a function. Fill in the blank to complete the function correctly: =_____ (E2:E39).
The function begins with an equal sign (=), then the word AVERAGE. The range is all of column E, represented by E:E. Question 5 Scenario 1 continued You’ve reached the share phase of the data analysis process. It involves which of the following? Select all that apply.
The share phase involves creating data visualizations, preparing your presentation, and communicating your findings to stakeholders. Question 6 Scenario 2, Question 6-10 You’ve been working for the nonprofit National Dental Society (NDS) as a junior data analyst for about two months. The mission of the NDS is to help its members advance the oral health of their patients. NDS members include dentists, hygienists, and dental office support staff. The NDS is passionate about patient health. Part of this involves automatically scheduling follow-up appointments after crown replacement, emergency dental surgery, and extraction procedures. NDS believes the follow-up is an important step to ensure patient recovery and minimize infection. Unfortunately, many patients don’t show up for these appointments, so the NDS wants to create a campaign to help its members learn how to encourage their patients to take follow-up appointments seriously. If successful, this will help the NDS achieve its mission of advancing the oral health of all patients. Your supervisor has just sent you an email saying that you’re doing very well on the team, and he wants to give you some additional responsibility. He describes the issue of many missed follow-up appointments. You are tasked with analyzing data about this problem and presenting your findings using data visualizations. An NDS member with three dental offices in Colorado offers to share its data on missed appointments. So, your supervisor uses a database query to access the dataset from the dental group. The query instructs the database to retrieve all patient information from the member’s three dental offices, located in zip code 81137. The table is dental_data_table, and the column name is zip_code. How do you complete the following query?
Question 7 Scenario 2 continued.... The dataset your supervisor retrieved and imported into a spreadsheet includes a list of patients, their demographic information, dental procedure types, and whether they attended their follow-up appointment. To use the dataset for this scenario, click the link below and select “Use Template.” Link to template: Course Challenge - Scenario 2 OR If you don’t have a Google account, you can download the template directly from the attachment below. Course Challenge Dataset - Scenario 2.csv The patient demographic information includes data such as age and gender. As you’re learning, it’s your responsibility as a data analyst to make sure your analysis is fair. The fact that the dataset includes people who all live in the same zip code might get in the way of fairness.
It’s your responsibility as a data analyst to make sure your analysis is fair. Although many zip codes do reflect diverse populations, a better choice would be to include data about people who live in multiple zip codes.Question 8 Scenario 2 continued...... As you’re reviewing the dataset, you notice that there are a disproportionate number of senior citizens. So, you investigate further and find out that this zip code represents a rural community in Colorado with about 800 residents. In addition, there’s a large assisted-living facility in the area. Nearly 300 of the residents in the 81137 zip code live in the facility. You recognize that’s a sizable number, so you want to find out if age has an effect on a patient’s likelihood to attend a follow-up dental appointment. You analyze the data, and your analysis reveals that older people tend to miss follow-ups more than younger people. So, you do some research online and discover that people over the age 60 are 50% more likely to miss dentist appointments. Sometimes this is because they’re on a fixed income. Also, many senior citizens lack transportation to get to and from appointments. With this new knowledge, you write an email to your supervisor expressing your concerns about the dataset. He agrees with your concerns, but he’s also impressed with what you’ve learned and thinks your findings could be very important to the project. He asks you to change the business task. Now, the NDS campaign will be about educating dental offices on the challenges faced by senior citizens and finding ways to help them access quality dental care. Changing the business task involves defining the new question or problem to be solved.
A business task is the question or problem data analysis answers for a business. Question 9 Scenario 2 continued..... You continue with your analysis. In the end, your findings support what you discovered during your online research: As people get older, they’re less likely to attend follow-up dental visits. But you’re not done yet. You know that data should be combined with human insights in order to lead to true data-driven decision-making. So, your next step is to share this information with people who are familiar with the problem. They’ll help verify the results of your data analysis. The people who are familiar with a problem and help verify the results of data analysis include customers and competitors.
Question 10 Scenario 2 continued....... The subject-matter experts are impressed by your analysis. The team agrees to move to the next step: data visualization. You know it’s important that stakeholders at NDS can quickly and easily understand that older people are less likely to attend important follow-up dental appointments. This will help them create an effective campaign for members. It’s time to create your presentation to stakeholders. It will include a data visualization that demonstrates the trend of people being less likely to attend follow-up appointments as they get older. Which type of chart will be most effective?
A line chart is effective for tracking trends over time, such as people attending fewer follow-up appointments as they get older. What is the collection and analysis of data called?Statistical Analysis includes collection, Analysis, interpretation, presentation, and modeling of data. It analyses a set of data or a sample of data. There are two categories of this type of Analysis – Descriptive Analysis and Inferential Analysis.
What are the three elements of data analysis?There are three tiers of data analysis: reporting, insights, and prediction.
Which describes data analytics?The term data analytics refers to the process of examining datasets to draw conclusions about the information they contain. Data analytic techniques enable you to take raw data and uncover patterns to extract valuable insights from it.
Which of the following are key elements of data analysis?Key Components of Data Analytics. Roadmap and operating model. Every organization tends to utilize mapping tools to make sustainable designs for their processes and capabilities. ... . Data acquisition. ... . Data security. ... . Data governance and standards. ... . Insights and analysis. ... . Data storage. ... . Data visualization. ... . Data optimization.. |