Statistics REVIEW

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What is an outlier in a data set?

Back

An outlier is a number that is significantly different from the other numbers in a data set. For example, in the data set 1, 1, 1, 2, 2, 3, 4, 5, 5, 25, the number 25 is an outlier.

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What is the mode of a data set?

Back

The mode is the number that appears most frequently in a data set. For example, in the data set 8, 6, 2, 8, 6, 6, 8, 6, 4, the mode is 6.

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How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers together and then divide by the total number of values. For example, for the data set 28, 18, 19, 18, 17, the mean is 20.

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What is the median of a data set?

Back

The median is the middle number when the data set is ordered from least to greatest. For example, in the data set 9, 7, 9, 3, 5, 9, the median is 8.

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How do you find the frequency of a specific value in a data set?

Back

The frequency is the number of times a specific value appears in the data set. For example, if 6 people had 1 pet, the frequency of '1 pet' is 6.

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What is a data set?

Back

A data set is a collection of numbers or values that represent a specific group or category.

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What does it mean to analyze data?

Back

Analyzing data means examining and interpreting the data to find patterns, trends, or insights.

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What is a range in statistics?

Back

The range is the difference between the highest and lowest values in a data set.

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What is a bar graph?

Back

A bar graph is a visual representation of data using bars to show the frequency or value of different categories.

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What is a line graph?

Back

A line graph is a visual representation of data that shows trends over time by connecting points with a line.