Question

Given are five observations collected in a regression study on two variables.

xi	2	6	9	13	20
yi	7	18	9	26	23

1. Which of the following scatter diagrams accurately represents the data?
   
   Scatter diagram #1
   
   Scatter diagram #2
   
   Scatter diagram #3
   
   SelectScatter diagram #1Scatter diagram #2Scatter diagram #3Item 1
   
2. Compute b₀ and b₁ (to 1 decimal).
   b₁
   b₀
   
   Complete the estimated regression equation (to 1 decimal).
   =  +  x
   
3. Use the estimated regression equation to predict the value of y when x = 6 (to 1 decimal).
   =

Answer 1

The statistical software output for this problem is:

From above output:

b) b1 = 0.9

b0 = 7.6

Regression equation:

y = 7.6 + 0.9 x

c) Estimated value = 7.6 + 0.9*6 = 13