Question

Scores on a mathematics assessment test for​ eighth-graders have a mean of 283​, a 10th percentile of 232​, a 25th percentile of 255​, a 75th percentile of 304​, and a 90th percentile of 327. Interpret each of these numerical descriptive measures. Interpret the mean value of 283. Choose the correct answer below. A. For this​ problem, the mean value of 283 represents the variation in the test scores on a mathematics assessment test for​ eighth-graders. B. For this​ problem, the mean value of 283 represents the range of test scores on a mathematics assessment test for​ eighth-graders. C. For this​ problem, the mean value of 283 represents the average test score on a mathematics assessment test for​ eighth-graders. D. For this​ problem, the mean value of 283 represents the middle test score when the scores are arranged in ascending​ (or descending) order.

Answer 1

Answer:

C )  For this​ problem, the mean value of 283 represents the average test score on a mathematics assessment test for​ eighth-graders.

Step-by-step explanation:

10 th  percentile of 232

10 % below 232 and 90 % above 232

25 th percentile of 255

25 % below 255 and 75 % above 255

75 th percentile of 304

75 % below 304 and 25% above 304

90 th percentile of 327

90 % below 327 and 10 % above 327 .

So counting is from below to above in ascending order .

the mean of 283 represents the average of the test score

Hence option C ) is correct .