Probability & Statistics Review

TRUE OR FALSE: A bag of marbles has 1 yellow, 2 blue, 3 red, and 4 green marbles. The probability of picking a yellow marble is 0.

• True

• False

Tags

CCSS.7.SP.C.5

A probability of exactly 1 means what:

• Impossible

• Unlikely

• Equally likely

• Certain

Tags

CCSS.7.SP.C.5

Mrs. Barraza wants to know how many 7th grade students would like to start a math club. What sample would be the best choice for her survey?

• Asking the students in STEM class.

• Ask the 30 students with the highest grades.

• Ask random students from the whole school.

• Ask random students from the whole 7th grade.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The table shows the hair color of all the teachers in a meeting. What is the MEAN of these numbers?

• 1

• 4

• 13

• 16

Tags

CCSS.6.SP.B.5C

At a concert, they are giving away free hats. 9 are pink, 15 are blue, 20 are red. If my favorite color is pink, what is the likelihood I will get a pink one?

• Impossible

• Unlikely

• Equally likely

• Likely

Tags

CCSS.7.SP.C.5

How many inches higher is the median of the girls' heights compared to the boys'?

• 1

• 2

• 66

• 67

How much larger is the interquartile range of the boys' heights compared to the girls?

• 2

• 3

• 5

Tags

CCSS.HSS.ID.A.3

A middle school has extra money and wants to know what students would prefer- new desks? or a new gym? What is the best sample for the survey?

• A random sample of the anime club.

• Ask random 7th graders only.

• Ask all the students on the basketball team.

• Ask every 20th student in the student directory.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

50 students were asked what their favorite subject in school is. The results are shown here. What percent of students picked ELA?

• 25%

• 50%

• 75%

• 100%

A spinner is spun 10 times and here are the results. Which spinner was most likely used?

• 
• 
• 
• 

Tags

CCSS.7.SP.C.6