Statistics Quiz Review

Find the mean of the numbers below:

12, 8, 14, 5, 1, 3, 0, 8, 10, 11

• 7.2

• 8

• 9

• 7.4

Find the median for the set of numbers:

85, 42, 64, 71, 39, 56, 26

• 71

• 42

• 56

• 60

Is a histogram the same as a bar graph?

• Yes, because they both use intervals.

• Yes, because they both use bars to display data.

• No, because a histogram displays categorical data while a bar graph displays numerical data.

• No, because a histogram displays numerical data while a bar graph displays categorical data.

What is the mode of the following data set?

5, 7, 7, 8, 12 , 12, 5, 6, 13, 12

• 5

• 7

• 12

• no mode

What is the median of the data?

• 10

• 12

• 13

• 14

• 18

What is the inner quartile range of the weekly car sales?

• 10

• 6

• 4

• 3

Which data set is more varied?

• Top plot

• Bottom plot

Which analysis of both Amy and Ed's test score is accurate? Select all that may apply.

• 50% of Ed's scores fall between 76 and 88

• 75% of Ed's scores fall between 70 and 90

• 50% of Amy's scores fall between 76 and 89

• The range of Amy's test scores is 13.

• Amy's test scores have a greater median.

What is the box plot?

• skewed left

• skewed right

• symmetrical

What is the shape of the data for Lucy's Steakhouse?

• skewed left

• skewed right

• symmetrical