Welcome Module's SLP. For Module, Continue Collect

Welcome module's SLP. For module, continue collect data days. Is larger sample changing ? Is increasing The larger sample size is statistically significant in the sense that it helps to complete the projected bell jar curve. A bell curve shape is "an indication of a normal distribution in statistics" (Trochim, 2006). However, it is not changing the mean in any substantial way. The larger sample size simply provides more evidence to reinforce the effect of the bell curve of the data.

Since the data reflects independent sampling, which is data that has no effect on one another (Easton & McColl, no date), the larger sample size does not significantly change the mean. Minutes listening In order to calculate the mean, I used the following equation: Mean X = 72+90+130+180+75+225+300+84+100+150+180+120+62+79+ Mean = 1939 + 15 = 129.266 minutes These calculations reveal that the mean is slightly decreasing with the additional five days of data. The mean was at 140.6 during the first 10 days of data collection, which was performed through observation.

The current sample appears to be enough to paint an accurate picture of this event. This is because of the fact that the additional days of data simply emphasized the bell curve of the data, while keeping a relatively similar mean.

References Larry Kudlow (2000) The Weak-End of Polling, Retrieved November 12, 2008, from http://www.nationalreview.com/kudlow/kudlow071800.html Probability Sampling, Retrieved November 12, 2008, from http://www.socialresearchmethods.net/kb/sampprob.htm Statistical Sampling Terms, Retrieved November 12, 2008, from http://www.socialresearchmethods.net/kb/sampstat.htm Statistics Glossary, Retrieved November 12, 2008, from http://www.stats.gla.ac.uk/steps/glossary/sampling.html Dobson A., & Young A. & Gibberd B. (n.d.). SurfStat Australia.

Retrieved November 12, 2008, from http://surfstat.anu.edu.au/surfstat-home/surfstat-main.html Introduction to Frequency Distributions, Retrieved November 12, 2008, from http://infinity.cos.edu/faculty/woodbury/Stats/Tutorial/Data_Freq.htm Slides on frequency distributions, Retrieved November 12, 2008, from http://campus.houghton.edu/orgs/psychology/stat3/ Frequency distributions, Retrieved November 12, 2008, from http://davidmlane.com/hyperstat/normal_distribution.html.