Posted by Bonnie on Tuesday, March 5, 2013 at 9:00pm.
below is the sales experience(in months) and the number of computers sold the the previous month of seven sales people.
Experience 4 12 9 6 10 30 7
Sales 19 42 28 31 39 30 21
Using the Minitab info write the straight line(least squares) equation and the correlation coefficent.
The regression equation is:
sales=27.2+0.252 exp
Predictor Coef SECoef T P
Constant 27.195 5.781 4.70 0.005
Exp. 0.2517 0.4201 0.60 0.575
S=8.97833 Rsq=6.7%

stats  MathGuru, Wednesday, March 6, 2013 at 6:13pm
I ran your data through an online calculator and the regression equation looks correct. See below:
7 data pairs (x,y):
( 4.00 , 19.0 ); ( 12.0 , 42.0 ); ( 9.00 , 28.0 ); ( 6.00 , 31.0 ); ( 10.0 , 39.0 ); ( 30.0 , 30.0 ); ( 7.00 , 21.0 );
y = a + bx where:
a= 27.2
b= 0.252
Correlation coefficient:
r = 0.259 (p = 0.575)
Answer This Question
Related Questions
 math  The sales team at an electronics store sold 48 computers last month. The ...
 Math  Im having trouble getting the correct answer to this question. Could ...
 C Programming  how do i write a C program that accepts sales made by 5 sales ...
 C Programming  Write a C program that accepts sales made by 5 sales reps for ...
 Finance  Here is a forecast of sales by National Bromide for the first 4 months...
 Statistics  1. A company decides to add a new program that prepares randomly ...
 Psychology  1. A company decides to add a new program that prepares randomly ...
 statistics  a company decides to add a new program that prepares randomly ...
 Finance  Forecasting Collections. Here is a forecast of sales by National ...
 statistics  1. A company decides to add a new program that prepares randomly ...
More Related Questions