stats quiz pool 3

The following table shows the weights of boxes. Which cumulative frequency distribution is correct?

• 15, 35, 45, 50

• 15, 20, 10, 5

• 15, 30, 40, 50

• 15, 30, 35, 40

The following table shows temperatures recorded over a week. Which cumulative frequency distribution is correct?

• 7, 15, 25, 30

• 7, 8, 10, 5

• 7, 14, 22, 27

• 7, 13, 20, 25

The table shows the number of books read by students:

• 10, 30, 45, 50

• 10, 20, 15, 5

• 10, 25, 35, 40

• 10, 30, 40, 50

The table shows participants in a fitness class:

• 12, 30, 50, 60

• 12, 18, 20, 10

• 12, 28, 48, 58

• 12, 25, 45, 55

The table summarizes hours worked by employees: Which cumulative frequency distribution is correct?

• 5, 15, 30, 50

• 5, 10, 15, 20

• 5, 20, 35, 55

• 5, 25, 40, 60

The following table shows household chore times: Which cumulative frequency distribution is correct?

• 8, 20, 30, 36

• 8, 12, 10, 6

• 8, 15, 25, 35

A researcher randomly selects 10 students from each grade level at a high school (freshmen, sophomores, juniors, and seniors) to survey their study habits. Which type of sampling is used?

• A) Stratified Sampling

• B) Systematic Sampling

• C) Cluster Sampling

• D) Simple Random Sampling

A medical researcher divides the population into 5 geographic regions and randomly selects one entire region to participate in a health study. Which type of sampling is used?

• A) Cluster Sampling

• B) Stratified Sampling

• C) Systematic Sampling

• D) Convenience Sampling

A company surveys every 20th person entering a shopping mall to get feedback on a new product. Which type of sampling is used?

• A) Systematic Sampling

• B) Cluster Sampling

• C) Stratified Sampling

• D) Simple Random Sampling

A teacher randomly selects 5 students from a list of all students in the school to participate in a school improvement survey. Which type of sampling is used?

• A) Simple Random Sampling

• B) Stratified Sampling

• C) Cluster Sampling

• D) Systematic Sampling