Measurements Are Made at Two Different Times $59 \%$ In 1970 To

question 77

Multiple Choice

Measurements are made at two different times. Find the absolute change and then find the percentage change. Roundanswers to the nearest tenth if necessary.
-At a certain college, the percentage of male students decreased from $59 \%$ in 1970 to $49 \%$ this year.

• A) Absolute change: \(- 10\) percentage points
• Percentage change: \(- 20.4 \%\)
• B) Absolute change: 10 percentage points
• Percentage change: 20.4\%
• C) Absolute change: \(- 16.9\) percentage points
• Percentage change: \(- 10 \%\)
• D) Absolute change: \(- 10\) percentage points
• Percentage change: \(- 16.9 \%\)

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Definitions:

Goodness-of-fit Test

Statistical tests that measure how well observed sample data fits a distribution from a population with a specified distribution.

Categorical Variable

A type of variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or observation to a particular group or category.

Degrees of Freedom

The number of independent values or quantities which can vary in the analysis of statistical parameters.

Chi-square Statistic

A statistical measure used in tests of independence or goodness of fit, quantifying how expected counts compare to observed counts.