Question

A professor records the time (in minutes) that it takes 16 students to complete an exam. Compute the SS, the variance, and the standard deviation assuming the 16 students constitute a population and assuming the 16 students constitute a sample. (Round your answers for variance and standard deviation to two decimal places.)

50 51 39 41 29 33 48 21 14 25 24 38 27 40 44 32

Answer 1

Sample Vasitance は8ユ :119-1333 Sampla Vcei once.13 Sampla Standosd deviation :\1119 . I 33° Sample Standosd viation(S) r lo、91 Populor on Votiance poputotton vositonde Populorion Sronda population Standand deviation: 10.5 k Note Cosculadions ase hoon beloo

Create the following table.

data	data-mean	(data - mean)2
50	15.25	232.5625
51	16.25	264.0625
39	4.25	18.0625
41	6.25	39.0625
29	-5.75	33.0625
33	-1.75	3.0625
48	13.25	175.5625
21	-13.75	189.0625
14	-20.75	430.5625
25	-9.75	95.0625
24	-10.75	115.5625
38	3.25	10.5625
27	-7.75	60.0625
40	5.25	27.5625
44	9.25	85.5625
32	-2.75	7.5625