www.awh.connectmath.com in: Chapter 9 (Test)-2018FL-PSYC. ed by ALEKS Corp. Inbo

Question

www.awh.connectmath.com in: Chapter 9 (Test)-2018FL-PSYC. ed by ALEKS Corp. Inbox (679)- aristide.ka McGraw-Hill Connect i Homework #7-32 Previous 11 12 13 4 15 16 17 18 19 20 Next Question 14 of 43 (1 point) The frequeney distribution shows a sample of the waterfall heights, in feet, of the variance and standard deviation for the data. Round your answers to one decimal 3.2 Section Exercise 25 31 waterfalls. Find place. Chec Class boundaries Frequeney 51.5-182.5 182.5-313.5 313.5-444.5 444.5-575.5 575.5-706.5 706.5-837.5 Guide 12 Show Ask M Variance - Save Standard deviation - Submit

Explanation / Answer

Ans:

Variance=1299807.355/31=41929.3

standard deviation=sqrt(41929.3)=204.8

Class m f m*f (m-315.61)^2*f 51.5-182.5 117 9 1053 355023.756 182.5-313.5 248 12 2976 54858.051 313.5-444.5 379 3 1137 12053.773 444.5-575.5 510 1 510 37786.345 575.5-706.5 641 4 2564 423507.059 706.5-837.5 772 2 1544 416578.370 Total= 31 9784 1299807.355

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