Statistical Measures and Data Interpretation

The video tutorial reviews how to create and interpret box and whisker plots, a method for displaying quantitative data. It explains the five-number summary, which includes the minimum, lower quartile, median, upper quartile, and maximum. The tutorial provides examples using resting heart rates, car speeds, and temperature data to demonstrate how to construct and analyze box plots. It also covers calculating the interquartile range and interpreting percentages of data within specific ranges. The session concludes with review questions to reinforce understanding.

What is the purpose of a box and whisker plot?

• To display quantitative data

• To display textual data

• To display qualitative data

• To display categorical data

Which of the following is NOT part of the five-number summary?

• Median

• Maximum

• Minimum

• Mode

In the resting heart rate example, what is the median heart rate?

• 66

• 64

• 70

• 68

What is the interquartile range in the resting heart rate example?

• 18

• 16

• 20

• 22

What percentage of data falls below the median in a box and whisker plot?

• 25%

• 50%

• 75%

• 100%

In the car speed example, what is the median speed?

• 75

• 70

• 65

• 60

What is the range of car speeds in the example?

• 24

• 26

• 28

• 30

In the temperature example, what is the upper quartile?

• 64

• 84

• 76

• 71

How many students scored between 45 and 85 in the test score example?

• 21

• 18

• 15

• 12

What is the interquartile range for the fuel efficiency example?

• 20

• 15

• 10

• 5