Suppose the average score on a national test is 500 with a standard deviation of 100. If each score is increased by 25, what are the new mean and standard deviation? A. 500, 100 B. 500, 125 C. 525, 100 D. 525, 105 E. 525, 125
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New mean = 500 + 25 = 525 Show more…
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Suppose the average score on a national test is 500 with a standard deviation of 100. If each score is increased by 25%, what are the new mean and standard deviation? A. 500, 100 B. 525, 100 C. 625, 100 D. 625, 105 E. 625, 125
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Suppose the average score on a national test is 500 with a standard deviation of $100 .$ If each score is increased by 25 , what are the new mean and standard deviation? (A) Mean $=500$ and $\mathrm{SD}=100$ (B) Mean $=500$ and $\mathrm{SD}=125$ (C) Mean $=525$ and $\mathrm{SD}=100$ (D) Mean $=525$ and $\mathrm{SD}=105$ (E) Mean $=525$ and $\mathrm{SD}=125$
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Suppose the average score on a national test is 500 with a standard deviation of 100 . If each score is increased by $25 \%,$ what are the new mean and standard deviation, respectively? (A) 500 and 100 (B) 525 and 100 (C) 625 and 100 (D) 625 and 105 (E) 625 and 125
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