Statistics for Business Decisions - Desklib

Running Head: STATISTICS FOR BUSINESS DECISIONS
Statistics for business decisions
Name of the Student
Name of the University
Author Note

1STATISTICS FOR BUSINESS DECISIONS
Table of Contents
Answer 1..........................................................................................................................................2
Part a............................................................................................................................................2
Part b............................................................................................................................................2
Answer 2..........................................................................................................................................2
Part a............................................................................................................................................2
Part b............................................................................................................................................3
Part c............................................................................................................................................3
Part d............................................................................................................................................3
Part e............................................................................................................................................3
Answer 3..........................................................................................................................................3
Part a............................................................................................................................................3
Part b............................................................................................................................................3
Answer 4..........................................................................................................................................4
Part a............................................................................................................................................4
Part b............................................................................................................................................4
Part c............................................................................................................................................4
Part d............................................................................................................................................5
Part e............................................................................................................................................5

2STATISTICS FOR BUSINESS DECISIONS
Answer 1
Part a
Class
Width
Frequenc
y
Cumulative
Frequency
Relative
Frequenc
y
Cumulative
Relative
Frequency
Percent
Frequency
50 - 60 3 3 0.15 0.15 15%
70 - 60 2 5 0.1 0.25 10%
80 - 70 6 11 0.3 0.55 30%
90 - 80 4 15 0.2 0.75 20%
100 - 90 5 20 0.25 1 25%
Part b
50 - 60 70 - 60 80 - 70 90 - 80 100 - 90
0%
5%
10%
15%
20%
25%
30%
35%
Distribution of Scores
Class Width
Percentage Frequency
The above image presents the histogram of Scores. From the histogram the scores seem
to be normally distributed.
Answer 2
df SS MS F Significance F
Regression 1 354.689 354.689 1.96622 0.16876
Residual 39 7035.262 180.3913
Total 40 7389.951
Coefficients Standard Error
Intercept 54.076 2.358
X 0.029 0.021