Question

(2)Some people have suggested that watching TV reduces the amount of time needed for physical activities thereby causing weight gains. A sample of seven 10-year old children was taken to determine if a relationship exists between the amount of time spent viewing TV and weight gain. The data are presented below. TV (Hours per week) 42 34 25 35 37 38 31 Overweight (lbs.) 18 6 0 -1 13 14 7 Use an appropriate statistical method to evaluate the data for any relationship between both variables. If a relationship exists, determine the nature of the relationship and how strong it is.

Answer 1

1. A sample of 7 10-years old if a relationship exists blw viewing Tv & weight gain. children was taken to determine the amount of time spent TV( Hours per week): overweight (lbs) : 42 18 34 25 35 37 0 -] 13 38 14 31 7 Let X: TV & Yo overweight. Txy = (orrelation (X,Y) - lov(x,y) Sd(x) 52() n sxy; - EX; Iy; sluski - (Exi}] [18712- (57." Here sti: 57. n=7. Exiyi : 2155, [xi: 242, sti?: 8544, [9; 4: 775. Yay. (7.x2155) - (242x57) 35-27 X 46-697 ray = 0.785 This is a strong positive correlation between weight gain & watching TV. That means every unit increase in weight is proportional to every unit increase in watching TV

for further query please comment below.thank you