Unit 6 Test Review

Which of the following is a measure of spread, or variability?

(select all that apply)

• Interquartile Range

• Standard Deviation

• Mean

• Median

• Range

Tags

CCSS.6.SP.A.3

What does standard deviation represent?

• the average

• the number that appears the most frequently

• How spread out each data value is from the mean.

• the middle of the data

Sylvia believes that the students in Term 2 had a higher average number of minutes of exercise than Term 1 because the IQR and Standard Deviation is higher for that group of students. Do you agree?

• Sylvia is correct. Since the standard deviation and IQR for Term 2 students is higher, this means that students spent more time exercising, on average, than Term 1.

• Sylvia is incorrect. The standard deviation and the IQR shows that there is greater variability in the amount of time exercising for Term 2 students compared to Term 1, but it does not tell us that the group spent more time exercising than Term 1.

The chart on the left shows the statistics on test scores in period 1 and period 5. Which is true?

• The average test score is higher for period 5, but the data is more spread out.

• The average test score is higher for period 1, but the data is more spread out.

• The average test score is higher for period 5, and the data is more consistent (closer to the mean) than period 1.

• The average test score is higher for period 1, and the data is more consistent (closer to the mean) than period 5.

Tags

CCSS.7.SP.B.4

The ages of the employees at which company tend to be lower than the other?

• Company A

• Company B

Tags

CCSS.7.SP.B.4

Find the MAD:
58, 38, 54, 48, 26, 36

• 43
• 20
• 10
• 12

Tags

CCSS.6.SP.B.5C

What is the shape of the data?

• symmetrical

• skewed left

• skewed right

• bell curve

What is the shape of the data?

• symmetrical

• skewed left

• skewed right

• bell curve

Which restaurant has the larger IQR?

• They have the same IQR

• Gary's Grill

• Lucy's Steakhouse

Tags

CCSS.HSS.ID.A.3

Which of the following best describes the shape of the distribution?

• SKEWED LEFT
• SKEWED RIGHT
• UNIFORM
• SYMMETRICAL