Unit 5 Statistical Graphs

What is the mean of the data set?

{11, 14, 15, 16, 16, 18, 20, 20, 22, 22}

• 11

• 15.6

• 17.4

• 18

What is the median of the data set?

12, 15, 18, 20, 22, 23, 24, 40, 45

• 22

• 12

• 38

• 40

Jorge's math grade is calculated using a weighted average. Quizzes are worth 30%, homework is worth 10%, unit tests are worth 40%, and the final exam is worth 20%.

Jorge earned an average of 92% on his quizzes, 98% on his homework, 91% on his unit tests, and a score of 95% on his final exam.

What is Jorge's final math grade?

• 92.8%

• 93.6%

• 94.0%

• 94.9%

The histogram shows the ages of people in a community chorus.

How many people in the chorus are between 30 and 50?

The stem-and-leaf plot lists the scores earned by students on a math test.

How many students earned a score of 90 or greater?

Is this a statistical question?

How many feet are in 4 yards?

• Statistical

• Not Statistical

Is this a statistical question?

How many siblings foes each of my friends have?

• Statistical

• Not statistical