Question

Tammy’s last four homework scores were 68, 76, 70, and 74. The mean absolute deviation of her scores is. Tammy worked hard on yesterday’s assignment and feels confident that this homework score will be at least a 90. Predict what will happen to her mean absolute deviation if she is correct:. Tammy was correct. She earned a 92! the new mean absolute deviation of her homework scores now that they are 68, 76, 70, 74, and 92 is:

Answer 1

With data of 68, 76, 70, and 74,

• The mean absolute deviation of the set of scores that Tammy has is given as 3.

• The prediction is going to be that her MAD would go up.

• With Data of 68, 76, 70, 74 and 92, her MAD is 6.4

How to solve for the Mean Absolute deviation (MAD) on excel

1. To solve this, I made use of the excel formula

This is formula is given as =AVEDEV(A1:A4)

The MAD in the first part is = 3

The data in the first part is contained from A1 to A4

2. If Tammy happens to be correct then the prediction for his absolute deviation is that it is going to go up.

3. After earning a 92, her MAD is going to be:

=AVEDEV(A9:A13)

= 6.4

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