5) Mr. Ali runs a gift shop in the Defense area, Karachi. He advertises weekly in the local newspapers and is considering increasing his advertising budget. Before doing so, he decides to evaluate the past effectiveness of these advertisements. Five weeks are sampled, and the advertising expenses (in PKR) and sales volume for each is shown in the Table 2.What iscorrelation coefficient value.

S.NO. Sales (PKR 100) Advertising(PKR 100)

1.00 4.00 4.10

2.00 7.00 6.72

3.00 6.00 5.05

4.00 8.00 7.26

5.00 4.00 2.69

6) Mr. Ali runs a gift shop in the Defense area, Karachi. He advertises weekly in the local newspapers and is considering increasing his advertising budget. Before doing so, he decides to evaluate the past effectiveness of these advertisements. Five weeks are sampled, and the advertising expenses (in PKR) and sales volume for each is shown in the Table 2. Develop a regression equation that would help Mr. Ali evaluate his advertising. Find slope value.

S.NO. Sales (PKR 100) Advertising(PKR 100)

1.00 4.00 4.10

2.00 7.00 6.72

3.00 6.00 5.05

4.00 8.00 7.26

5.00 4.00 2.69

7) Mr. Ali runs a gift shop in the Defense area, Karachi. He advertises weekly in the local newspapers and is considering increasing his advertising budget. Before doing so, he decides to evaluate the past effectiveness of these advertisements. Five weeks are sampled, and the advertising expenses (in PKR) and sales volume for each is shown in the Table 2. Develop a regression equation that would help Mr. Ali evaluate his advertising. Find constant value.

S.NO. Sales (PKR 100) Advertising(PKR 100)

1.00 4.00 4.10

2.00 7.00 6.72

3.00 6.00 5.05

4.00 8.00 7.26

5.00 4.00 2.69