Question

Person number	X Value	Y Value	Person number	X Value	Y Value	Person number	X Value	Y Value
1	24	30	11	39	42	21	21	27
2	42	53	12	60	65	22	33	29
3	20	27	13	34	40	23	25	27
4	31	30	14	24	26	24	22	25
5	22	24	15	51	57	25	28	33
6	46	47	16	80	83	26	34	40
7	52	60	17	28	27	27	53	55
8	25	28	18	25	29	28	26	28
9	30	30	19	30	31	29	29	33
10	23	27	20	43	44	30	26	29

Work for the first variable, X:

2. Construct a frequency table, containing at least 5 classes, but no more than 8 classes. [2]

Class	Frequency
20-29
30-39

3. Make the following graphs, using Stat Crunch.

1. histogram [2]

2. frequency polygon [2]

3. cumulative frequency polygon [2]

4. stem and leaf [2]

5. box plot [2]

Answer 1

(a)Histogram

(b) Frequency Polygon

(c)Cumulative Frequency Polygon

(d)

Stem-and-Leaf Display: C1

Stem-and-leaf of Frequency N = 5
Leaf Unit = 0.10

1   0 0
2   1 0
(2) 2 00
1   3
1   4

(e) Box plot