check

Diagnostic Test - Statistics

This diagnostic test helps you determine your strengths and weakness in the area of statistics. This assessment is designed to evaluate your personal knowledge of statistics. Do Not Use Any Reference Material. This diagnostic assessment covers the basic statistical concepts  needed to understand statistics and analyze data.The score scale is as follows:
90%+ = highly advanced
80%-89% = advanced
70%-79% = proficient
69% or below = low proficiency
(Tutor or statistics prep course  recommended)

Click the button below to start.

Start

Question 1 of 26

Below, the best definition of a sample is...

A

a subset of people from a larger population of people

B

the total number of people belonging to any group who are the target of interest in a research study.

C

a subset of a population of people, things, or events used to make inferences about the total population.

D

any total group of people, things, or events that are the target of interest in a research study.

Question 2 of 26

Below, the best definition of a population is...

A

a subset of a group of people, things, or events used to make inferences about the total group.

B

the total number of people belonging to any group who are the target of interest in a research study.

C

any total group of people, things, or events that are the target of interest in a research study.

D

a subset of people from a larger population of people.

Question 3 of 26

What are measures of central tendency?

A

Values that tend to represent the center of a distribution.

B

Values that represent the spread of a distribution.

C

Values that represent the range of a distribution.

D

Values that represent the accuracy of a distribution.

Question 4 of 26

What are examples of measures of central tendency?

A

mean, mode, standard deviation

B

range, standard deviation, variance

C

mean, median, and range

D

mean, median, and mode

Question 5 of 26

Sample Distribution: 1 2 2 2 4 4 6
Using the sample distribution above, which value best represents the mean?

A

2

B

3

C

2.5

D

4

Question 6 of 26

Sample Distribution: 1 2 2 2 4 4 6
Using the sample distribution above, which value best represents the median?

A

2

B

2.5

C

3

D

4

Question 7 of 26

Sample Distribution: 1 2 2 2 4 4 6
Using the sample distribution above, which value best represents the mode?

A

3

B

2.5

C

2

D

4

Question 8 of 26

What are examples of measures of dispersion?

A

variance, mode, standard deviation

B

range, standard deviation, variance

C

standard deviation, median, and range

D

range, standard deviation, and mode

Question 9 of 26

Which of the following represents the average distance of each score from the mean?

A

range

B

standard deviation

C

variance

D

mode

Question 10 of 26

Which of the following is true about the normal distribution?

A

the mean, median, and mode are roughly equal

B

there are an equal number of values on both sides of the mean (symmetrical)

C

it is often referred to as a "bell curve."

D

all of the above

Question 11 of 26

What percent of the values of a distribution are between 1 standard deviation below the mean and 1 standard deviation above the mean?

A

34%

B

47.5%

C

68%

D

95%

E

99%

Question 12 of 26

What percent of the values of a distribution are between 3 standard deviation below the mean and 3 standard deviation above the mean?

A

34%

B

47.5%

C

68%

D

95%

E

99%

Question 13 of 26

What percent of the values of a distribution are between 2 standard deviation below the mean and 2 standard deviation above the mean?

A

34%

B

47.5%

C

68%

D

95%

E

99%

Question 14 of 26

According to the central limit theorem...

A

the standard deviation is equal to the population standard deviation

B

the standard deviation divided by sqrt(N) equals the standard error of the mean

C

the mean of all possible sample means equals the population mean

D

options 2 and 3

Question 15 of 26

According to the central limit theorem, the sampling distribution of sample means forms a normal distribution when...

A

the sample size of your sample distributions is 30 or greater

B

the number of samples in your sampling distribution is 30

C

there are 30 sample means from a population

D

the sample size is 30 and there are 30 sample means

Question 16 of 26

The sampling distribution is often referred to as...

A

the distribution of sample values

B

the distribution of sample means

C

the distribution of sample proportions

D

the distribution of scores in a sample

Question 17 of 26

The definition of a sample distribution is...

A

the distribution of sample values

B

the distribution of sample means

C

the distribution of sample proportions

D

the distribution of scores in a sample

Question 18 of 26

A confidence interval is...

A

a range of values likely to include the population parameters

B

the values that define the range of values likely to include the population parameters

C

the probability value associated with the range of values likely to include the population parameters

D

none of the above

Question 19 of 26

The confidence limits are...

A

a range of values likely to include the population parameters

B

the values that define the range of values likely to include the population parameters

C

the probability value associated with the range of values likely to include the population parameters

D

none of the above

Question 20 of 26

The confidence level is...

A

a range of values likely to include the population parameters

B

the values that define the range of values likely to include the population parameters

C

the probability value associated with the range of values likely to include the population parameters

D

none of the above

Question 21 of 26

Select the "best" definition of an dependent variable. A dependent variable is...

A

An outcome variable

B

A response variable

C

Any variable that is being influenced by another variable

D

All of these options

Question 22 of 26

Select the "best" definition of an independent variable. An independent variable is...

A

a variable that is being measured or predicted

B

output

C

response variable

D

a variable that influences or explains another variable

Question 23 of 26

For which level of measurement are numbers used primarily to indicate relative position or order?

A

Interval

B

Ordinal

C

Nominal

D

Ratio

Question 24 of 26

For which scale of measurement are numbers primarily used as labels?

A

Ratio

B

Nominal

C

Ordinal

D

Interval

Question 25 of 26

For this level of measurement, the number 0 means the total absence of the characteristic being measured?

A

Nominal

B

Ordinal

C

Interval

D

Ratio

Question 26 of 26

For this level of measurement, the number 0 is arbitrary?

A

Nominal

B

Ordinal

C

Interval

D

Ratio

Confirm and Submit