Scores on a mathematics assessment test for eighth-grade\'s have a mean of 283,

Question

Scores on a mathematics assessment test for eighth-grade's have a mean of 283, a 10th percentile of 229, a 25th percentile of 253, a 75th percentile of 302. and a 90th percentile of 325. 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 middle test score when the scores are arranged in ascending (or descending) order. B. For this problem, the mean value of 283 represents the variation in the test scores on a mathematics assessment test for eighth-graders. C. For this problem, the mean value of 283 represents the range of test scores on a mathematics assessment test for eighth-graders. A 10th percentile of 229 means that of the scores fall below A 25th percentile of 253 means what of the scores fall below and % of the scores fall above. A 75th percentile of 302 means that of the sores fall below and of the scores fall above. A 90th percentile of 325 means that % of the scores fall below and % of the scores fall above.

Explanation / Answer

D is right for the main question

A 10th percentile of 229 means that 10% of the scores fall below 229 and 90% of the scores fall above 229

A 25th percentile of 253 means that 25% of the scores fall below 253 and 75% of the scores fall above 253

A 75th percentile of 302 means that 75% of the scores fall below 302 and 25% of the scores fall above 302

A 90th percentile of 325 means that 90% of the scores fall below 325 and 10% of the scores fall above 325

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