Statistics Quiz: Understanding Quantiles and Data Visualization

Question 1 A data set containing 36 data points is divided into 9 quantiles. What is the maximum number of data points that falls below the second quantile?  8  4  9  12 Question 2 Image: Three Pie Charts Review Image: Three Pie Charts . Which pie chart displays a categorical variable for which 80 of 100 rows of data are in one single category and the remaining 20 rows are in a different single category?  Figure 2  Figure1  None of the figures meets the given requirements.  Figure 3 Question 3 Which type of graph should be used to visualize stock prices over a given time period?  Line graph  Box plot  Histogram  Pie chart Question 4 What information can be found in a box-and-whiskers plot? Select all that apply.  Outliers

 Standard Deviation  Median  Maximum Question 5 What are the advantages of quantiles over other techniques? Select all that apply.  Quantiles of random values are preserved under increasing transformations.  Quantiles are less susceptible to outliers.  Quantiles can be used in cases where only nominal data are available.  Quantiles are preserved under increasing transformations. Question 6 2 pts For a data set of N points, the number of bins suggested by Sturge's formula is 5. What is the value of N?[ use base 10]  10  100  1,000  10,000 Question 7 Which components are used in the visual presentation of a graph? Select all that apply.  Labels describing what is being represented on the axis  Legends describing parts that make up the graph  Scales reflecting the range of numbers  Programming language that generated the graph Question 8

Figure: Box-and-Whisker Plot Review Figure: Box-and-Whisker Plot . What is the value of the IQR in this plot?  75  10  48  51 Question 9 Figure: Temperature over Time Chart Review Figure: Temperature over Time Chart . The chart displays the temperature changes in a month of a year. Which components of the graph are missing? Select all that apply.  Scales  Units of measurements  Legend

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 Axes labels Question 10 Suppose that you have a sample of categorical data, and you want to create a visualization for it. Which chart would be best to choose for this data?  Pie Chart  Line Graph  Scatter Plot  Categorical data cannot be visualized.

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