Data Analysis•easy

Mean of a List After Removing a Value

The mean of a list of $5$ numbers is $20$ . If the number $30$ is removed from the list, what is the mean of the remaining $4$ numbers?

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Data Analysis•easy

The mean of a list of $5$ numbers is $20$ . If the number $30$ is removed from the list, what is the mean of the remaining $4$ numbers?