SAEE Data Collection and Analysis 2

Question 1

Which sampling method gives every member of a population an equal chance of being selected?

Accepted Answer

Simple random sampling

Answer

Convenience sampling

Answer

Quota sampling

Answer

Snowball sampling

Question 2

A data set has values 4, 8, 8, 10, 20. What is the median?

Accepted Answer

8

Answer

10

Answer

12

Answer

20

Question 3

Which graph type is best for showing the proportion of parts to a whole?

Accepted Answer

Pie chart

Answer

Line graph

Answer

Scatter plot

Answer

Histogram

Question 4

What does a correlation coefficient of -0.9 indicate?

Accepted Answer

Strong negative relationship

Answer

Strong positive relationship

Answer

No relationship

Answer

Weak negative relationship

Question 5

Which measure of central tendency is most affected by an extreme outlier?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 6

Primary data is best described as data that is:

Accepted Answer

Collected firsthand by the researcher

Answer

Collected from existing published sources

Answer

Always quantitative

Answer

Never reliable

Question 7

A histogram is most appropriate for displaying:

Accepted Answer

The frequency distribution of continuous data

Answer

Categorical brand names

Answer

A single percentage

Answer

Geographic locations