Stats

Number of Ours Students Study
Per Week
A Term Paper
Presented to
Department of Business Administration
College of Business Administration
In Partial Fulfillment
Of the Requirement for
ECO 331: Business Statistics II
By
Friday April 11, 2003
Table of Contents
Abstract..1
Introduction….2
Methodology..2
Frequency Distribution..3
Descriptive Measures.3
Results4
Tables & Figures4-5
Reference6
Abstract
Given the data provided by the students from Alabama A&M University and Alabama State University, the following research was conducted. The number of hours students studied per week was gathered by questionnaires from a sample size of 20 students. The objective of this paper is to interpret all of the necessary qualitative and quantitative data and present in accurate mathematical computations and graphics. In order to do this we include all of the necessary analyses.
This report will perform the following statistical analyses:
OSummarize the variables under study graphically (frequency distribution, histogram, etc).

OTest the variables under study using descriptive statistics.

Essay due? We'll write it for you!strong>
For You For Only $13.90/page!


order now

OTest of Hypothesis
OFor each classified group separately summarize the variable under study using the descriptive measures.

OCompare the descriptive measures of the groups.
OInterpret and draw conclusions from each analysis.


Introduction
In this research paper, two data sets have been taken from a statistical database and have been converted into tables and charts in order to relate the data in simpler form. The first set of variables that was gathered from the database was the number of hours an ASU students study. The database separated all of the information into four different set of number based on the number hours studied per-week.

The second set of numbers that were gathered from the database was the number of hours a A&MU students study. This data was also composed into two categories based on the total number of hours studied per-week.
METHODOLOGY
Data was retrieved from students that attend Alabama State University and Alabama A&M University. The variables represented were that of 20 students from each category and the hours they studied per week. All of the data collected are displayed in the rest of this research paper. A spreadsheets was created and the data was placed into its proper location based on the data that it included. This was used to show the information in a graphical sense in order to interpret all of the data in its simplest form.



Descriptive Measures
Sample Mean, Sample Variance, and Sample Standard Deviation and an assortment of others variables were used to conduct this research of hours students studied. All of the data was collected and put into separate categories where multiple statistical formulas were implemented into this research paper.
Those statistical formulas are:
Population Mean: mu: Black (2001, p78)
One Sample of size:Black (2001, p78)
Variance: Black (2001, p67)
2nd independent sample of size:Black (2001, p67)
Normal Population Mean:Black (2001, p66)
Variance: Black (2001, p67)
Normal Z-test formula:Black (2001, p78)
Results
Table-1 Figure-1
ASU A&MU
Mean11.78947Mean13.10526
Standard Error1.856833Standard Error2.048955
Median9Median10
Mode4Mode5
Standard Deviation8.093749Standard Deviation8.931186
Sample Variance65.50877Sample Variance79.76608
Kurtosis-0.46477Kurtosis-0.79894
Skewness0.565265Skewness0.591849
Range30Range28
Minimum0Minimum3
Maximum30Maximum31
Sum224Sum249
Count19Count19
Confidence Level(95.0%)3.901065Confidence Level(95.0%)4.304697
Hours of Study
ASUA&MU
1520
47
510
1110
2025
1822
05
43
75
43
78
95
93
415
2231
3028
1615
1916
2018
1719

Table – 2.


Z-Test: Two Sample for Means
z-Test: Two Sample for Means
ASUA&MU
Mean11.7813.10
Known Variance13
Observations2020
Hypothesized Mean Difference0
z18.7
P(Z