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. 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