Calculate Measures of Center and Variation

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What is a Negative Correlation?

Back

A relationship between two variables where as one variable increases, the other decreases.

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What is the Five-Number Summary?

Back

A summary that includes the minimum, first quartile (Q1), median (Q2), third quartile (Q3), and maximum of a data set.

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What is the Mode?

Back

The number that occurs the most frequently in a data set.

Front

How do you calculate the Median?

Back

Arrange the numbers in order and find the middle value. If there is an even number of values, average the two middle values.

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What does it mean if 75% of a group meets a certain criterion?

Back

It means that three-quarters of the group satisfies the condition.

Front

What is the Minimum value in a data set?

Back

The smallest number in the data set.

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What is the Maximum value in a data set?

Back

The largest number in the data set.

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What is the First Quartile (Q1)?

Back

The median of the lower half of the data set, representing the 25th percentile.

Front

What is the Third Quartile (Q3)?

Back

The median of the upper half of the data set, representing the 75th percentile.

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What is the difference between Mean and Median?

Back

Mean is the average of all values, while Median is the middle value when arranged in order.