Question

The accompanying table gives the number of a popular household item sold by a store over 30 consecutive days

28	32	46	33	39	40
47	53	56	40	44	21
38	62	57	48	36	22
53	34	24	29	32	38
18	37	46	36	37	45

1. Construct a group frequency distribution of the above data comprising 6 classes of equal width. Let 15 be the lower limit of the initial class

2. Use the grouped data determined in 1 to calculate each of the following

2.1 Median

2.2 Mode

2.3 Standard deviation

Answer 1

for 1. See the frequency distribution variable.