stats

posted by .

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 R-sq=6.7%

  • stats -

    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)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Finance

    Forecasting Collections. Here is a forecast of sales by National Bromide for the first 4 months of 2001 (figures in thousands of dollars): Month: 1 2 3 4 Cash sales 15 24 18 14 Sales on credit 100 120 90 70 On average, 50 percent of …
  2. Math

    Im having trouble getting the correct answer to this question. Could someone help out. Monthly sales of a particular personal computer are expected to decline at the following rate of S'(t) computers per month, where t is time in months …
  3. Finance

    Here is a forecast of sales by National Bromide for the first 4 months of 2012 (figures in thousands of dollars): Month: 1 2 3 4 Cash sales 19 28 22 18 Sales-on-crdt 140 160 130 110 On average, 40% of credit sales are paid for in the …
  4. statistics

    a company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall popualtion of sales people at this national company …
  5. Psychology

    1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company …
  6. Statistics

    1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company …
  7. statistics

    1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company …
  8. math

    The sales team at an electronics store sold 48 computers last month. The manager at the store wants to encourage the sales team to sell more computers and is going to give all the sales team members a bonus if the number of computers …
  9. C Programming

    Write a C program that accepts sales made by 5 sales reps for the 4 months that they have been selling the company's products. The program should then find the total sales for 4 months, total sales for each sales rep, and total sales …
  10. C Programming

    how do i write a C program that accepts sales made by 5 sales reps for the 4 months that they have been selling the company's products. The program should then find the total sales for 4 months, total sales for each sales rep, and …

More Similar Questions