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Questions and Answers
What is the formula to calculate the mean of a set of numbers?
In a set of data, if the mean is greater than the median, what does this indicate about the data's distribution?
What effect does an outlier in a dataset have on the mean and median?
Study Notes
Calculating Mean
- The formula to calculate the mean of a set of numbers is: mean = (sum of all values) / (total number of values)
Data Distribution
- If the mean is greater than the median, it indicates that the data is skewed to the right (positively skewed), meaning there are extremely large values in the dataset.
Effect of Outliers
- An outlier in a dataset increases the mean, as it is sensitive to extreme values.
- An outlier in a dataset has a smaller effect on the median, as it is a more robust measure of central tendency.
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Description
Test your knowledge of averages and data distribution with this quiz. Explore the formula for calculating the mean of a set of numbers and understand the significance of the mean being greater than the median. Learn about the impact of outliers on the mean and median in a dataset.
