Unit A: Stats Test

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 9 and 15 days?

• 68%

• 34%

• 16%

• 2.5%

Tags

CCSS.HSS.ID.A.4

Given a mean of 75 and a standard deviation of 7, what percentage of scores are greater than 61?

• 34%

• 84%

• 97.5

• 68%

Tags

CCSS.HSS.ID.A.4

Given a mean of 75 and a standard deviation of 7, what percentage of scores are below 68?

• 34%

• 81.5%

• 16%

• 84%

Tags

CCSS.HSS.ID.A.4

What is the mean?

• # happening the most
• the number in the middle
• biggest-smallest
• the average

Tags

CCSS.6.SP.B.5C

Find the mean of this data set:

2, 57, 38, 42, 6

• 29

• 38

• 50

• 145

Tags

CCSS.6.SP.B.5C

Find the median of this data set:

4, 2, 7, 4, 3

• 2

• 5

• 7

• 4

Tags

CCSS.6.SP.B.5C

What is the median of the scores?

• 21

• 16

• 17

• 19

Jane Goodall lived among wild chimpanzees intermittently for decades, studying their social and family systems while keeping her interaction with the chimpanzees to a minimum. Which research method is most appropriate?

• biased study

• census

• experiment

• observational study

Tags

CCSS.HSS.IC.B.3

Dr. Larson was interested in whether classical music helps students perform better on a test. Dr. Larson randomly assigned half of the study's participants to a group that listened to classical music while taking a test. The other half of the participants did not listen to music while taking a test. Which research method is most appropriate?

• sample survey

• experiment

• observational study

Tags

CCSS.HSS.IC.B.3

Population or Sample?

All of the teachers in a school are surveyed on their meeting time preferences.

• Population

• Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1