Question

The amount spent on groceries per week (y) and the number of household members (x) are shown below.

x	2	3	3	4	1	5
y	$383	$420	$466	$547	$206	$620

Determine which variable is the independent variable and which is the dependent variable.

The independent variable is x  and the dependent variable is y  .

Calculate the correlation coefficient r. (Round your answer to four decimal places.)

r =  

Calculate the equation of the regression line. (Round your numerical values to two decimal places.)

y =

99.20x+142.72

  

I don't know how to get Y= a+bx

what is a and b

  

Answer 1

From the table,

The correlation coefficient is

The intercept and slope are

The regression equation is,

y = 142.73 + 99.2 (x)