AWS Certified Machine Learning – Specialty Set 5 Author: CloudVikas Published Date: 19 March 2020 Welcome to AWS Certified Machine Learning - Specialty Set 4. Please enter your email details to get QUIZ Details on your email id. Click on Next Button to proceed. 1. You are working for a major research university analyzing data about the professors who teach there. The features within the data contain information like employee id, position, department, job description, salary, and tenure. The tenure attribute is binary 0 or 1, whether the professor has tenure or does not have tenure. You need to find the distribution of professors and salaries. What is the best visualization to use to achieve this?Bubble chartLine chartHistogram2. Which visualizations help show composition? (Choose 3) Stacked bar chart Histogram Stacked area chart Pie chart Bubble chart3. Which visualizations help show comparisons? (Choose 2) Histogram Stacked bar chart Line chart Bar chart4. What does the box in a box plot represent?The minimum values.The middle 50% of the values.The maximum values.5. You are a ML specialist designing a regression model to predict the sales for an upcoming festival. The data from the past consists of 1,000 records containing 20 numeric attributes. As you start to analyze the data, you discovered that 30 records have values that are in the far left of a box plot's lower quartile. The festival manager confirmed that those values are unusual, but plausible. There are also 65 records where another numerical value is blank. What should you do to correct these problems?Drop the unusual records and replace the blank values with separate Boolean values.Drop the unusual records and replace the blank values with the mean value.Use the unusual data and replace the missing values with a separate Boolean variable.6. You are a ML specialist working for a retail organization. You are analyzing customer spending data for particular locations and comparing how it changes over time. You want to visualize the monthly total amount spent at each location over the last 5 years. Which visualization can you use to help you see this?Bar chartScatter chartLine chart7. You are a ML specialist building a regression model to predict the amount of rainfall for the upcoming year. The data you have contains 18,000 observations collected over the last 50 years. Each observation contains the date, amount of rainfall (in cm), humidity, city, and state. You plot the values in a scatter plot for a given day and amount of rainfall. After plotting points, you find a large grouping of values around 0 cm and 0.2 cm. There is a small grouping of values around 500 cm. What are the reasons for each of these groupings? What should you do to correct these values?The groupings around 0 cm and 0.2 cm are extremes and should be removed. The values around 500 cm should be normalized and used once normalized.The groupings around 0 cm are days that had no rainfall, the groupings around 0.2 cm are days where it rained, the groupings around 500 cm are outliers. The values around 500 cm should be dropped and the other values should be used as is.The groupings around 0 cm are days that had no rainfall, the groupings around 0.2 cm are days where it rained, the groupings around 500 cm are days where it snowed. The values should be used as is.8. Before you decide to create any chart or graph, you need to decide what you want to show or convey.Which Amazon service allows you to create interactive graphs and charts, and acts as Business Intelligence (BI) tool?TableauMatplotlibQuicksight9. Which type of visualization uses color to show the density of values?Scatter chartHeatmapBubble plot10. Data visualization helps to tell stories by curating data into a form easier to understand, highlighting the trends and outliers. A good visualization tells a story, removing the noise from data and highlighting the useful information.You are a ML specialist working for a retail organization. You are analyzing data that has different items at different costs. You decide to choose the top 5 most expensive items and visually compare their prices. Which visualization can help you achieve this?Bar chartScatter chartPie chart11. Which visualizations help show distribution? (Choose 3) Scatter chart Stacked bar chart Box plot Histogram Line chart12. Which visualizations help show relationships? (Choose 2) Bar chart Scatter plot Bubble chart Stacked area chart13 out of 12Please fill in the comment box below. Author: CloudVikas
