Measures of Central Tendency

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What is the definition of Measures of Central Tendency?

Back

Measures of Central Tendency are statistical measures that describe the center or typical value of a dataset. The most common measures are mean, median, and mode.

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How do you calculate the mean of a set of numbers?

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To calculate the mean, add all the numbers together and then divide by the total number of items in the set.

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What is the median in a dataset?

Back

The median is the middle value when the numbers are arranged in ascending order. If there is an even number of observations, the median is the average of the two middle numbers.

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What is the mode of a dataset?

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The mode is the number that appears most frequently in a dataset. A dataset may have one mode, more than one mode, or no mode at all.

Front

If the average of five numbers is 55, what is the total sum of those numbers?

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The total sum is 55 multiplied by 5, which equals 275.

Front

What is the formula for finding the average (mean)?

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Average (Mean) = (Sum of all items) / (Number of items in the set)

Front

How do you find the median of the numbers 1, 2, 2, 8, 9, 14?

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Arrange the numbers in order: 1, 2, 2, 8, 9, 14. The median is the average of the two middle numbers (2 and 8), which is 5.

Front

What does it mean if a dataset has no mode?

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It means that no number repeats in the dataset, so there is no value that appears more frequently than others.

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In the context of averages, what does 'outlier' mean?

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An outlier is a value that is significantly higher or lower than the other values in a dataset, which can skew the average.

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What is the relationship between mean, median, and mode in a normal distribution?

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In a normal distribution, the mean, median, and mode are all equal and located at the center of the distribution.