Sports Statistics Mid-Year

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

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What are the measures of central tendency?

Back

The measures of central tendency include the mean (average), median (middle value), and mode (most frequently occurring value).

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What is the range in statistics?

Back

The range is the difference between the highest and lowest values in a data set. It is not a measure of central tendency.

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What is a z-score?

Back

A z-score indicates how many standard deviations an element is from the mean. It is calculated as (X - mean) / standard deviation.

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What does a negative z-score indicate?

Back

A negative z-score indicates that the value is below the mean of the data set.

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What does a positive correlation mean in statistics?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

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What does a negative correlation mean in statistics?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables. Each point represents an observation.

Front

What does a correlation coefficient of -0.21 indicate?

Back

A correlation coefficient of -0.21 indicates a weak negative correlation between the two variables.

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What does a correlation coefficient of 0.92 indicate?

Back

A correlation coefficient of 0.92 indicates a strong positive correlation between the two variables.