Question

please find mean and standard deviation

Nutrition: animals. The mouse weights (in grams) of a random sample of 100 mice involved in a nutrition experiment are: Interval 141.5 - 43.5 43.5 - 45.5 45.5 - 47.5 47.5-49.5 49.5-51.5 Frequency 3 7 11 23 16 Interval 51.5 - 53.553.5-55.5 55.5 -57.5 57.5-59.5 Frequency 17 15 a. Find the mean of the weight of the mice.gms (Type an integer or a decimal. Round to two decimal places.) 12

Answer 1

class f midvalue fid f.d2 de X-50.5 2 (avalue -4 -12 -21 43 63 -3 42:5 44.5 46.5 48.5 -2 -22 ५५ 23 -1 -23 42.5-43.5 3. 143.5-45.5 7 45:5-47,5 47.5-49.5 23 49.5-51.5 16 51.5-53.5 17 153.5-55.5 15 155.5-57.5 6 57.5-59.5 2 o 0 1 17 17 50.S-A 52-5 54.5 56.5 58.5 2 30 18 .3 4. 60 54 32 8 Ef 2100 Efd²341 sfid=5 (-ve ) to mean (2) A+ Efd 50-5+(-5)x2 n 1150 Eso.5-0.1 -50.40 gram mean is so-Yognam

r? 62 I efd²- | tifd 2 y -512 Bu 34) loo 100 u[ 3.41 0.0025 - 4 x 3.9075 4 X 3.4075 13.63 T= 13.63 3.6919 Z 3.69 gram Standard deviation is 3.6919 grams 3.69 ground rounded to two decines place)