Carter got the following scores on Science tests: 78,82,88,90,93.

What is the mean deviation?

i got 10.3 but that not a answer plz help me.

To find the mean deviation, you need to follow these steps:

1. Find the mean (average) of the scores by adding them up and then dividing by the total number of scores:
78 + 82 + 88 + 90 + 93 = 431
431 ÷ 5 = 86.2 (mean)

2. Find the deviation of each score from the mean by subtracting the mean from each score:
78 - 86.2 = -8.2
82 - 86.2 = -4.2
88 - 86.2 = 1.8
90 - 86.2 = 3.8
93 - 86.2 = 6.8

3. Calculate the absolute value of each deviation (ignoring the positive or negative sign):
|-8.2| = 8.2
|-4.2| = 4.2
|1.8| = 1.8
|3.8| = 3.8
|6.8| = 6.8

4. Find the mean of the absolute deviations by adding up the absolute deviations and dividing by the total number of scores:
8.2 + 4.2 + 1.8 + 3.8 + 6.8 = 24.8
24.8 ÷ 5 = 4.96 (mean deviation)

Therefore, the mean deviation of Carter's science test scores is 4.96.

well, what's the mean? 86.2

The deviations from the mean are thus
8.2, 4.2, ...

Now just take the mean of those values. That's the mean deviation.