Question

1. The table below shows the number of students in Arlington High School from the number of years since

Answer 1

The required solution is a ) y = 90.2 x + 2729.8 , b ) m = 90.2  , c ) y - intercept = 2729.8 , d )  3812 students , e ) No , it won't be equal to the actual population in 2012 because we are calculating estimated value .

Regression Line : y = mx + b

a ) y = 90.2 x + 2729.8where  x represents years since 2000    and y represents students in Arlington High School

b ) m = 90.2 is the slope of the equation . The slope is interpreted as the change of y for a one unit increase in x . So, there's a change of 90.2 units in value of y for 1 unit change in x .

c ) y - intercept = 2729.8 . The y - intercept makes no sense as at no. of years = 0 , the avg no. of students in school = 2729.8 which is illogical .

d ) To predict population in year 2012 , put x = 12 in regression equation .y = 90.2 (12 ) + 2729.8   = 3812.2 ≈ 3812 students .

e ) No , it won't be equal to the actual population in 2012 because we are calculating estimated value .

To learn more on regression go on :

brainly.com/question/5586207

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