Maggie and jillian are both collecting postcards. Maggie has 4 times as many postcards as jillian. Maggie has 40 postcards.
1 answer:
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Answer:
Step-by-step explanation:
n = sample size = 5
a) Let us determine the sum
Now we can determine
The estimate b of the slope β is the ratio of and
The mean is the sum of all value divide by number of values
The estimate a of the intercept is
General least square equation;
replace alpha by a = 3 and beta by b = 0.67 in general least equation
y = a + bx
195.9 + 0.67x
b)
<em>Scatter plot is shown in the attached file</em>
x is on the horizontal axis
y is n the vertical axis
The degree of freedom of regression is 1
because we use one variable s predictor variable
The degree of freedom of error is the sample size n decrease by 2
Total df is equal to the sum of seperate degree of freedom dfR and dfE
total df = 1 +3 4
Total SS =Syy= 45007.2
SSE + Total SS = SSR
= 45007.2 - 43146.9296
= 1860.2705
