In the data set below, what is the mean absolute deviation? 2, 8, 9, 1, 1 If the answer is a decimal, round it to the nearest tenth. mean absolute deviation (MAD): _____

Calculate Mean: Calculate the mean of the data set 2, 8, 9, 1, 1. Add all the numbers: 2 + 8 + 9 + 1 + 1 = 21. Divide by the number of data points: 21 / 5 = 4.2. Mean = 4.2. Find Deviations: Find the absolute deviations from the mean for each data point. For 2: |2 - 4.2| = 2.2. For 8: |8 - 4.2| = 3.8. For 9: |9 - 4.2| = 4.8. For 1: |1 - 4.2| = 3.2. For 1: |1 - 4.2| = 3.2. Calculate Mean Deviations: Calculate the mean of the absolute deviations. Add all the absolute deviations: 2.2 + 3.8 + 4.8 + 3.2 + 3.2 = 17.2. Divide by the number of data points: 17.2 / 5 = 3.44. Mean absolute deviation = 3.44. Round Mean Deviation: Round the mean absolute deviation to the nearest tenth. 3.44 rounded to the nearest tenth is 3.4.

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In the data set below, what is the mean absolute deviation? $\newline$ $2, 8, 9, 1, 1$ $\newline$ If the answer is a decimal, round it to the nearest tenth. $\newline$ mean absolute deviation (MAD): $\_\_$

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Grade 8

Calculate mean absolute deviation

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Q. In the data set below, what is the mean absolute deviation?

\newline

2, 8, 9, 1, 1

\newline

If the answer is a decimal, round it to the nearest tenth.

\newline

mean absolute deviation (MAD):

\_\_

Calculate Mean: Calculate the mean of the data set $2, 8, 9, 1, 1$ . Add all the numbers: $2 + 8 + 9 + 1 + 1 = 21$ . Divide by the number of data points: $21 / 5 = 4.2$ . Mean = $4.2$ .
Find Deviations: Find the absolute deviations from the mean for each data point. $\newline$ For $2$ : $|2 - 4.2| = 2.2$ . $\newline$ For $8$ : $|8 - 4.2| = 3.8$ . $\newline$ For $9$ : $|9 - 4.2| = 4.8$ . $\newline$ For $1$ : $|1 - 4.2| = 3.2$ . $\newline$ For $1$ : $|1 - 4.2| = 3.2$ .
Calculate Mean Deviations: Calculate the mean of the absolute deviations. $\newline$ Add all the absolute deviations: $2.2 + 3.8 + 4.8 + 3.2 + 3.2 = 17.2$ . $\newline$ Divide by the number of data points: $17.2 / 5 = 3.44$ . $\newline$ Mean absolute deviation = $3.44$ .
Round Mean Deviation: Round the mean absolute deviation to the nearest tenth. $3.44$ rounded to the nearest tenth is $3.4$ .