How do you find the sigma of the x and y values? do you do it like a partial derivative?
regression analysis question:
infant 1 2 3 4 5 6 7 8
birth length(in) 19.75 20.5 19 21 19 18.5 20.25 20
6-month length (in) 25.5 26.25 25 26.75 25.75 25.25 27 26.5
a researcher collected data on length of birth and length at 6 months for 8 infants.
calculate the following values:
∑ x, ∑ x2 , ∑ y, ∑ xy, ∑ y2
then find ssxx and ssyy

Step-by-step explanation:

Sample size of 8 infants were taken and their birth lengths in inches recorded and also 6 months lengths.

If x is length at birth time, and y 6 month length

we have as per table below.

xyx^2y^2xy

119.7525.5390.0625650.25503.625

220.526.25420.25689.0625538.125

31925361625475

42126.75441715.5625561.75

51925.75361663.0625489.25

618.525.25342.25637.5625467.125

720.2527410.0625729546.75

82026.5400702.25530

Total1582083125.6255411.754111.625

SSxx = 3125.625 and SSyy = 5411.75

46.2+112.3

step-by-step explanation:

with btw u said 100pts but it clearly says

i answerd and just got 10pts

no hate