Stats Practice Test

What is the mode of the following data set?

34, 33, 28, 11, 34, 38, 27, 12, 28, 33, 34, 11, 34, 27, 33, 34, 27, 33, 34, 34

• 7

• 27

• 34

• 38

Tags

CCSS.6.SP.B.5C

2, 5, 6, 7, 4, 5, 6, 5

What is the mode of the data?

• 2

• 5

• 4

• 6

Tags

CCSS.6.SP.B.5C

2, 5, 6, 7, 4, 5, 6, 5

What is the median of the data?

• 6

• 7

• 9

• 5

Tags

CCSS.6.SP.B.5C

2, 5, 6, 7, 4, 5, 6, 5

What is the mean of the data?

• 2

• 5

• 13

• 21

Tags

CCSS.6.SP.B.5C

What is the interquartile range of ages in years for the participants?

a) 40 to 45 b) 25 to 50 c) 5 d) 40

• 40 to 45

• 25 to 50

• 5

• 40

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Twenty-five percent of the participants were younger than what age?

a) 25 b) 10 c) 40 d) 45

• 25

• 10

• 45

• 40

Tell if each sample is biased or unbiased:

A store surveys customers one morning to determine what products the store should stock.

• biased

• unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Tell if each sample is biased or unbiased:

Each student’s name is written on a slip of paper and placed in a box. One slip is selected to choose a team captain.

• biased

• unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Tell if each sample is biased or unbiased:

A librarian randomly chooses 100 books from the library’s database to calculate the average length of a library book.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Which is correct regarding which is the population or sample?

• Population: Students attending Duke

  Sample: Freshman girls attending Duke

• Sample: Students attending Duke

  Population: Freshman girls attending Duke

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1