Statistics

Hunter wants to find out which teacher is most favored at Garfield Middle School. Which of the following sample methods will give him the most accurate results?

• Surveying all the students in Mrs. Thompson's homeroom.

• Surveying 40 random students in the sixth grade.

• Surveying a group of students waiting in the car rider line.

• Surveying middle school students from Jackson Middle School.

Kimberly wants to know which club people at her school are most likely to participate in. Which would be the best sample for Kimbrely to use?

• Kimberly should ask her friends on the soccer field.

• Kimberly should ask the students at her lunch table.

• Kimberly should ask every 20th person on the school's roster.

• Kimberly should ask her family members.

6. Which city has a higher median?

• Millersburg

• Arcadia

Compare the Interquartile Range.

• The IQRs are the same.

• Car Hop has a greater IQR

• The Cruisers has a greater IQR.

• IQR cannot be determined.

1st period has a test score range of 70. 2nd Period has a test score range of 30. What can you infer from this data?

• 1st period scores better.

• 2nd period scores better.

• 1st period's test scores are more varied.

• 2nd period's test scores are more varied.

What is the approximate difference in the interquartile ranges?

• 20

• 12

• 32

• 40

Which dot plot has the greatest variability?

• A

• B

• C

• D

Which box and whisker plot has the highest median?

• Top plot

• Bottom plot

What is the interquartile range for the Checkers Club?

• 4

• 5

• 10

• 11

Which data set shows a greater spread?

• Chess Club

• Checkers Club

• They have the same spread.

• You cannot tell from the box plots.