March 21 Central Tendency Vocabulary Review

Central Tendency Review

SOL 6.11ab

Multiple Select

What are the two steps to finding the mean (balance point)?

• Get the sum of the data set

• Order the data set from least to greatest

• Divide the sum by the total number of values in the data set

• Choose the value in the middle of the data set

• Choose the value that occurs the most

Multiple Select

What are the two steps to finding the median?

• Get the sum of the data set

• Order the data set from least to greatest

• Divide the sum by the total number of values in the data set

• Choose the value in the middle of the data set

• Choose the value that occurs the most

Multiple Select

What are the two steps to finding the mode?

• Get the sum of the data set

• Order the data set from least to greatest

• Divide the sum by the total number of values in the data set

• Choose the value in the middle of the data set

• Choose the value that occurs the most

The mean will INCREASE if we

• If we add a data point that’s above the mean, OR

• or take away a data point that’s below the mean

• This is always true

• For example,

Multiple Choice

Consider the data set:

{9, 8, 12, 6, 10}

The mean is 9. What would happen to the mean if we added at 15 to the data set?

• the mean would increase

• the mean would decrease

• the mean would stay the same

Multiple Select

The mean will DECREASE if we

• Add a data point that is lower than the mean

• Add a data point that is higher than the mean

• Delete a data point that lower than the mean

• Delete a data point that is higher than the mean

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