1. A study is conducted involving 10 patients to investigate the relationship and effects of patient's age and their blood pressure. Question: Calculate the linear regression model of the patient's age and blood pressure.

Observations	Age (X)	Blood Pressure (Y)
1	35	112
2	40	128
3	38	130
4	44	138
5	67	158
6	64	162
7	59	140
8	69	175
9	25	125
10	50	142

2. A study is conducted involving 10 students to investigate the relationship and affects of revision time and lecture attendance on exam performance.

Observations	Performance (Y)	Revision time (X1)	Lecture attendance (X2)
1	40	6	4
2	44	10	4
3	46	12	5
4	48	14	7
5	52	16	9
6	58	18	12
7	60	22	14
8	68	24	20
9	74	26	21
10	80	32	24

Question 2:

Calculate the multiple regression model from the data given above.

Question 3

a. Use the table below to answer the following questions.

Size of the Item	4	5	6	7	8	9	10	11	12	13
Frequency	2	5	8	9	12	14	14	15	11	13

i. ii.

Calculate the average What is the mode of the data?

b. Use the data below to answer the questions.

Class	0 -10	10 - 20	20 - 30	30 - 40	40 - 50	50 - 60	60 - 70	70 - 80
Frequency	5	10	20	40	30	20	10	5

i. Calculate the mean ii. Calculate the median iii. Calculate the mode. iv. Standard Deviation