Rise Placement Test Statistics and Data Analysis 3

Question 1

A histogram shows data grouped into intervals. Which of the following CANNOT be easily determined from a histogram?

Accepted Answer

Exact individual data values

Answer

Frequency of each interval

Answer

The shape of the distribution

Answer

Which interval has the most data

Question 2

A study finds that cities with more hospitals have higher death rates. Which conclusion is most appropriate?

Accepted Answer

Correlation does not imply causation

Answer

Hospitals cause higher death rates

Answer

Death rates cause more hospitals to be built

Answer

The study proves hospitals are harmful

Question 3

A researcher wants to survey 200 students about lunch preferences and randomly selects students from an alphabetical list at every 10th name. This is an example of:

Accepted Answer

Systematic sampling

Answer

Random sampling

Answer

Stratified sampling

Answer

Convenience sampling

Question 4

A graph shows average income rising while the y-axis starts at $50,000 instead of $0. This technique is often used to:

Accepted Answer

Exaggerate the visual appearance of growth

Answer

Show accurate data trends

Answer

Reduce chart clutter

Answer

Highlight outliers

Question 5

A two-way table shows 120 students surveyed about pets. 60 own dogs, 40 own cats, and 20 own both. How many own neither?

Accepted Answer

40

Answer

20

Answer

60

Answer

80

Question 6

In a normal distribution, approximately what percentage of data falls within one standard deviation of the mean?

Accepted Answer

68%

Answer

95%

Answer

50%

Answer

99.7%

Question 7

A die is rolled 60 times. Based on theoretical probability, how many times would you expect to roll a 4?

Accepted Answer

10

Answer

6

Answer

12

Answer

15