Descriptive Statistics and t-test

Name 3 measures of central tendency

• Range

• Mode

• Median

• Standard deviation

• Mean

Name 2 measures of dispersion

• Range

• Mode

• Median

• Standard deviation

• Mean

What t-test type compares the means for two groups?

• Paired Samples

• Independent

• Dependent

• Mixed

Which does NOT describe a Dependent t-test?

• It is also known as Paired Sample Test.

• It compares the median of the same group.

• It compares the mean of the same group.

• It compares data from different times.

Which best describes a t-test?

• It is a type of descriptive statistics.

• It is used to determine if there are significant differences.

• It can be used as long as the data is not normally distributed.

• All of the above.

Which is a symbol for a null hypothesis?

• H₁

• H₂

• H_a

• H_o

Which is true?

• P-Value < 0.05 - there's statistical difference

• P-Value < 0.05 - there's no statistical difference

• P-Value > 0.05 - there's statistical difference

• None of the above

The data in the picture:

• is negatively skewed

• positively skewed

• symmetrical

The data in the picture:

• is negatively skewed

• positively skewed

• symmetrical

A way to describe the shape of a data display that indicates most of the data is on one side of the display.

• symmetric

• skewed

• uniform

• unimodal