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25 September, 20:39

Melissa's birthday is next week and she has been receiving cards in the mail with different amounts of money. She has received 5 cards with the following amounts: $10, $20, $ 25, $30, $40. If Melissa receives one more card in the mail with $25, which of the following will happen?

The standard deviation will

Select a Value

A) decrease.

B) increase.

C) stay the same.

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Answers (1)
  1. 25 September, 20:49
    0
    Currently, the standard deviation is 10, because on average the cards were $10 away from the mean.

    Adding another card with value $25 would decrease the standard deviation because it is closer to the mean the the current standard deviation.
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