Post a New Question

math help

posted by .

okay can someone set this up for me and help me understand it please.I tried it but i am clueless please show me how to solve this?

The number of banks in the United
States has dropped about 30% since 1992. The following
data are from a survey in which x represents the years
since 1900 and y corresponded to the number of banks, in
thousands, in the United States.†

"e"= this symbol i willuse to represet that weird E for correlatlion

n=10 "e" x^2 = 93205
"e" x = 965 "e"xy=9165.10
"e"y = 95.3 "e"y^2= 920.47

a) find an equation of the least square line.

I used the equation that goes like this: r = (10 (9165.10)-(965)(95.3))/sqrt 10(93205)- (965)^2 - sqrt 10(920.47) - (95.3)^2

and what i came up with was -0.986 but then this would be for high correlation.

b)If the trend continues,how many banks will there be in 2004?
c) Find and interpret the coefficient of correlation?

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question