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 IIByFriday April 11, 2003 Table of Contents Abstract… 1 Introduction… 2 Methodology… 2 Frequency Distribution… 3 Descriptive Measures…
3 Results… 4 Tables & Figures… 4-5 Reference… 6 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: O Summarize the variables under study graphically (frequency distribution, histogram, etc).
O Test the variables under study using descriptive statistics. O Test of Hypothesi sO For each classified group separately summarize the variable under study using the descriptive measures. O Compare the descriptive measures of the groups. O Interpret 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, p 78). One Sample of size: Black (2001, p 78). Variance: Black (2001, p 67). 2 nd independent sample of size: Black (2001, p 67). Normal Population Mean: Black (2001, p 66). Variance: Black (2001, p 67).
Normal Z-test formula: Black (2001, p 78) Results Table-1 Figure-1 ASU A&MU Mean 11. 78947 Mean 13. 10526 Standard Error 1. 856833 Standard Error 2. 048955 Median 9 Median 10 Mode 4 Mode 5 Standard Deviation 8. 093749 Standard Deviation 8.
931186 Sample Variance 65. 50877 Sample Variance 79. 76608 Kurtosis -0. 46477 Kurtosis -0. 79894 Skewness 0. 565265 Skewness 0.
591849 Range 30 Range 28 Minimum 0 Minimum 3 Maximum 30 Maximum 31 Sum 224 Sum 249 Count 19 Count 19 Confidence Level (95. 0%) 3. 901065 Confidence Level (95. 0%) 4.
304697 Hours of Study ASU A&MU 15 204 75 1011 1020 2518 220 54 37 54 37 89 59 34 1522 3130 2816 1519 1620 1817 19 Table – 2. Z-Test: Two Sample for Means-Test: Two Sample for Means ASU A&MU Mean 11. 78 13. 10 Known Variance 1 3 Observations 20 20 Hypothesized Mean Difference 0 z 18. 7 P (Z.