Question

The table displays the scores of students on a recent exam. Find the mean of the

scores to the nearest ioth.
Score Number of Students
60
2
65
1
70
8
75
6.
80
6
85
3
90
4

Answer 1

Answer: The answer is 75 and since you have to round it up to the nearest tenth the answer would be 80.

Explanation:

You first have to add all the score numbers: 60, 65, 70, 75, 80, 85, 90

Then, you will get 525

Now, divide that by how many scores there are which is 7 and you get 75

Finally, 75 rounded to the nearest tenth is 80!

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Answer 2

The mean of the scores in the table is 76.33 to the nearest tenth.

The mean is the sum of all the values divided by the number of values.

In this case, there are 30 scores and we need to find the sum of those scores.

To do this, we can multiply the number of students who got each score by the score itself, and then add all those products together.

For example, there are 2 students who got a score of 60, so we can add 2 * 60 to our sum.

We can do this for each of the scores in the table.

Once we have the sum of all the scores, we can divide that sum by the number of scores (30) to get the mean.

Here's the calculation in more detail:

Score of 60: 2 students * 60 points = 120 points

Score of 65: 1 student * 65 points = 65 points

Score of 70: 8 students * 70 points = 560 points

Score of 75: 6 students * 75 points = 450 points

Score of 80: 6 students * 80 points = 480 points

Score of 85: 3 students * 85 points = 255 points

Score of 90: 4 students * 90 points = 360 points

If we add all of these products together, we get 2290 points.

Finally, we divide this sum by the number of scores (30) to get the mean:

2290 points / 30 scores = 76.33 points

Therefore, the mean of the scores in the table is 76.33 to the nearest tenth.