Statistical Methods Quiz

What is the mean in statistics?

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• The most frequently occurring number in a dataset.

• A measure of how much numbers differ from the mean.

What is the median in statistics?

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• The most frequently occurring number in a dataset.

• A measure of how much numbers differ from the mean.

What is the mode in statistics?

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• The most frequently occurring number in a dataset.

• A measure of how much numbers differ from the mean.

What does variance measure?

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• A measure of how much numbers differ from the mean.

• The most frequently occurring number in a dataset.

What is the range in statistics?

• The difference between the highest and lowest values in a dataset.

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• A measure of how much numbers differ from the mean.

What is standard deviation?

• The square root of variance.

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• The most frequently occurring number in a dataset.

What does percentage represent?

• A proportion of a whole expressed as a fraction of 100.

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• A measure of how much numbers differ from the mean.

What is frequency in statistics?

• The number of times a value appears in a dataset.

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• A measure of how much numbers differ from the mean.

What is a t-test used for?

• To compare the means of two groups.

• To measure the strength of a relationship between two variables.

• To compare the means of three or more groups.

• To determine if there is a significant relationship between two categorical variables.

What does Pearson's r measure?

• The strength and direction of the relationship between two numerical variables.

• The average of a set of numbers.

• The middle number in an ordered set of numbers.

• The most frequently occurring number in a dataset.