How Many Paired Comparisons Are Possible Given 9 Stimulus Objects

question 39

Multiple Choice

How many paired comparisons are possible given 9 stimulus objects ?

• A) 54
• B) 48
• C) 36
• D) 45

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Definitions:

T-statistic

A ratio of the departure of the estimated value of a parameter from its hypothesized value to its standard error, used in hypothesis testing.

Sample Mean

The average value of all observations in a sample.

Alternative Hypothesis

A statement that suggests there is a statistically significant relationship between two variables, contrasting the null hypothesis.

Standard Error

The standard deviation of the sampling distribution of a statistic, commonly the mean.