Dr Salazar Recently Completed an Experiment in Which She Compared

question 120

Multiple Choice

Dr. Salazar recently completed an experiment in which she compared reasoning ability in a sample of females and a sample of males. The means of the female and male samples equaled 21 and 19,respectively,on a 25-point scale. A statistical test revealed that her results were not statistically significant. What can Dr. Salazar conclude?

• A)Females have superior reasoning ability.
• B)The difference in the means of the two samples is probably due to chance variation.
• C)The difference in the means of the two samples is reliable.
• D)None of these statements is true.

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Definitions:

Negatively Skewed

A distribution of data where the tail on the left side of the distribution is longer or fatter than the right side, indicating that the bulk of the values lie to the right of the mean.

Distribution

The way in which something is shared out among a group or spread over an area, also used in statistics to describe the spread of values in a dataset.

Kurtosis

A statistical measure that describes the shape of a distribution's tails in relation to its overall shape, indicating the degree of outlier prominence.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how spread out the values are from the mean.