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Caren Anderson Written Report Hours of Work vs. Credit Hours at School The purpose of this study is to find out if the hours worked at a job are related to the amount of credit hours taken at school. To perform this study we as a group collected our own data which consist of 25 random surveys. This was only conducted on students that attend salt lake community college. There was no standard for choosing who to give the survey to, I just simply asked classmates and random people around campus. This was done over a one week so we could get as many random samples as possible and not just get students from one class, or a certain time of the day. This would help insure to not have any bias. 1) See attached worksheet 2) The statistics for my first quantitative variable (hours) are: Mean: 28.4 Standard Deviation: 13.3 Five number summary: Min: 0, Q1: 19, Med: 30, Q3: 40, Max: 70 Range: 70 Mode: 40 Outliers: 70 3) Histogram for Hours: Hours at Work 40 35 Frequency 30 25 20 15 10 5 0 5 10 15 20 4) Box Plot for hours at work: 25 30 35 40 45 50 55 60 65 70 Box Plot for Hours Worked 0 10 20 30 40 50 60 70 5) Statistics for second quantitative variable (credit hours): Mean: 10.18 Standard Deviation: 3.83 Five number summary: Min: 3, Q1: 7, Med: 11, Q3: 13, Max: 18 Range: 15 Mode: 12 Outliers: none 6) Histogram for Credit hours: Credit Hours 70 60 Frequency 50 40 30 20 10 0 5 10 15 Hours 20 7) Box plot for credit hours: Box Plot for Credit Hours 0 5 10 15 20 8) R=.4062 and the equation for the line of regression is: y=-.1169811834x+13.51517127 9) Scatter plot with line of regression: Scatter Plot w/ Line of regreesion 20 18 Credit Hours at School 16 14 12 10 8 6 4 2 0 0 10 20 30 40 50 Hours worked 60 70 80 Difficulties/Surprises Encountered: The one thing that I was surprised about is how many students work while going to school. I think sometimes you tend to think you’re the only one carrying a monstrous load with work and school but looks like we are all in the same boat. The difficulties I encountered were just getting all of my data into excel and constructing correct graphs. Oh how I do not like excel at this point but it was actually very informative and I think I could make any graph in excel at this point. I was also surprised that it took me so long to get this project done and how long it did take to make the graphs I constructed. Analysis: The correlation between the two variables turned out to be on the weak side. I was actually surprised about how weak it was. I originally thought it would correlate a little bit closer to credit hours but ended up that many students do work full time or more while taking on credit hours. I think the amount of surveys we did does give a pretty accurate look at whether or not credit hours and job hours correlate and I have found that there is not much correlation.