Data Set Analysis and Measures

The video tutorial covers key statistical concepts such as interquartile range, box plots, range, and mean absolute deviation. It explains how to calculate these metrics and create box plots from data sets. The tutorial also discusses identifying gaps and peaks in data, providing a comprehensive understanding of data analysis techniques.

What is the term for the difference between the upper quartile and the lower quartile of a data set?

• Range

• Mean

• Interquartile Range

• Median

Which graph shows the median, quartiles, and least and greatest values of a data set?

• Scatter Plot

• Line Graph

• Box Plot

• Histogram

What is the difference between the greatest value and the least value in a data set called?

• Interquartile Range

• Mean Absolute Deviation

• Range

• Variance

What is the mean of the distances between the values of a data set and the mean of the data set?

• Standard Deviation

• Mean Absolute Deviation

• Variance

• Interquartile Range

What is the first step in creating a box plot from a data set?

• Order the data from least to greatest

• Identify the outliers

• Find the mean

• Calculate the range

How do you calculate the mean absolute deviation of a data set?

• Find the median and subtract from each value

• Find the mean and calculate the average distance from the mean

• Calculate the range and divide by the number of values

• Find the interquartile range and divide by two

In a data set, if the mean is 43, what is the mean absolute deviation if the sum of distances from the mean is 16?

• 3.2

• 4.0

• 3.5

• 2.5

What is the range of a data set with a greatest value of 88 and a least value of 82?

• 10

• 8

• 4

• 6

In a dot plot, if there is no data for the number 1, what does this indicate?

• A peak

• An outlier

• A cluster

• A gap

How many peaks does a histogram have if the tallest bar is the only one reaching a certain height?

• Two

• One

• Three

• None