Souta wants to compare the mean of his test scores in French class to the mean absolute deviation. Language Test Scores French Scores 76 62 94 80 He uses the steps below to find both the mean and mean absolute deviation. French Scores Step 1 Add the scores. 76 + 62 + 94 + 80 = 312 Step 2 Divide the sum of the scores by 4. 312 divided by 4 = 78 Step 3 Add the differences between the mean and each score. (76 minus 78) + (62 minus 78) + (94 minus 78) + (80 minus 78) = 0 Step 4 Divide by 4. StartFraction 0 over 4 EndFraction = 0 In which step did Souta make the first error? Step 1 Step 2 Step 3 Step 4

Souta wants to compare the mean of his test scores in French class to the mean absolute deviation Language Test Scores French Scores 76 62 94 80 He uses the ste class=

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Answer:

Souta made the first error in Step 3

Step-by-step explanation:

In order to find the Mean Absolute Deviation of a data set, you need to find the ABSOLUTE VALUE of the differences between the mean and each score.  This means that 76-78 will be |76-78|, or 2.

Only then can you divide by 4. The correct answer should have been

[tex]|76-78|=2\\\\|62-78|=16\\\\|94-78|=16\\\\|80-78|=2[/tex]

[tex]2+2+16+16=36\\\\36\div4=9[/tex]

So 9 is the MAD of this data set.

Hope this helped!

Answer:

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Step-by-step explanation: