Statistics - Multiple Regression Projects

Exercise 1 A sample of 60 patients undergoing treatment for phobias was recruited in order to examine

Exercise 1

A sample of 60 patients undergoing treatment for phobias was recruited in order to examine the effectiveness of self-hypnosis, cognitive-behavioural therapy (CBT), or a combination of the two, in the reduction of the phobia. The number of sessions of self-hypnosis and CBT are recorded below. The score on the phobia scale indicates how much the phobia has been reduced; the higher the score on the scale indicates a high level of reduction in the phobia. Does the number of self-hypnosis sessions and CBT sessions predict reduction in the phobia?

Participant Number	Number of Self-Hypnosis Sessions	Number of CBT Sessions	Phobia Scale Score
1	36	32	40.7
2	35	36	36.7
3	45	46	47.9
4	34	46	34.5
5	37	39	45.5
6	33	32	37.8
7	42	43	48.0
8	41	45	49.4
9	32	36	37.0
10	46	43	52.4
11	44	44	44.5
12	31	42	34.9
13	35	33	41.2
14	42	48	42.6
15	39	42	48.8
16	32	44	39.0
17	33	38	35.8
18	33	30	41.6
19	39	49	43.1
20	34	38	35.2
21	46	41	49.3
22	38	43	46.7
23	39	42	44.4
24	32	39	33.1
25	46	53	52.2
26	41	51	48.7
27	31	38	39.3
28	42	43	43.5
29	31	38	33.1
30	34	31	42.7
31	41	41	45.5
32	47	50	54.3
33	46	50	47.3
34	48	58	51.2
35	43	52	47.5
36	47	58	54.1
37	48	56	54.7
38	35	42	40.0
39	38	44	41.5
40	42	52	51.9
41	45	41	49.2
42	45	43	51.0
43	47	49	53.1
44	30	34	34.2
45	39	43	39.8
46	39	41	41.9
47	38	50	42.1
48	39	45	44.7
49	47	54	52.6
50	33	45	35.2
51	36	32	39.5
52	35	36	38.3
53	45	46	53.7
54	34	46	34.3
55	37	39	46.2
56	33	32	42.4
57	42	43	51.7
58	41	45	43.4
59	32	36	38.8
60	46	43	65.0