of the data in this frequency distribution is b) 12.71 c) 11 a) 11.375 d) 8.563

Question

of the data in this frequency distribution is b) 12.71 c) 11 a) 11.375 d) 8.563 e) None of the above 15-19 of Variation of 1,3,4,5,6,7,9,11,15 is: c) None of the above b) 63.79% e) a) 63.79 768% d) 4.3237 7. In the Box and whisker plot the Range (R) is: 10 20 b) 16.5 a) 205 d) 22 c) I1 e) None of the above 8. For the arranged data, the Eighty fifth percentile Ps of the data. is: 190 194 200 201 20.1 20.4 20.5 20.8 20.9 21.4 216 219 222 224 226 22.7 22.8 22.9 23.0 23.5 236 237 237 239 24.1 24.2 24324.7 24.9 25.0 a) 255 4)228 b) 242 c) 23.5 None of the above e)

Explanation / Answer

Question 5

Here total sampel size = 2 + 7 + 16 +5 = 30

so median will be the average of 15th and 16th number. Here median interval is 10 - 14

frequency of median interval = 16

M = L + {(n/2) ? B}/G × w

M= 9.5 + {(30/2) - 9)/16 * 5

M = 11.375

Question 6

Here mean if these numbers M = 6.77778

Standard deviation of these numbers s = 4.3237

Coefficient of variation = s/M = 4.3237/6.7778 = 63.79%

Questiomn 7

Here minimum value = 7

maximum value = 29

range = 29 - 7 = 22

Question 8

total data = 30

85th percentile = 30 * 0.85 = 25.5 or 26th item = 24.2

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