Front

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.

Front

How is the mean calculated?

Back

Front

What is the median?

Back

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

Front

How do you find the median in a dataset with an even number of values?

Back

To find the median in a dataset with an even number of values, arrange the data in ascending order and take the average of the two middle values.

Front

What is the mode?

Back

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

Front

What does it mean if a distribution is skewed left?

Back

If a distribution is skewed left, it means that the left tail of the distribution is longer or fatter than the right tail. In this case, the mean is typically less than the median.

Front

What does it mean if a distribution is skewed right?

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If a distribution is skewed right, it means that the right tail of the distribution is longer or fatter than the left tail. In this case, the mean is typically greater than the median.

Front

What is an outlier?

Back

An outlier is a data point that is significantly different from the other data points in a dataset. Outliers can affect the mean more than the median.

Front

How does an outlier affect the mean and median?

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An outlier can significantly affect the mean by pulling it towards the outlier value, while the median remains relatively unaffected as it depends on the middle values.

Front

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

Back

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