Module 4 - SLP SAMPLING By submitting this assignment, you affirm that it contains all original work. You affirm that you have not engaged in direct duplication, copy/pasting, sharing assignments, collaboration with others, contract cheating and/or obtaining answers online, paraphrasing, or submitting/facilitating the submission of prior work. Work found to be unoriginal and in violation of this policy is subject to consequences such as a failing grade on the assignment, a failing grade in the course, and/or elevated academic sanctions. In this assignment, you will continue to collect data for another 5-10 days. Write a paper (1-3 pages) including all of the following content: Recalculate the mean, standard deviation, and variance. Is your mean increasing or decreasing? Explain the effects of the larger sample size in relation to your data. Do you think the current sample you have is enough to draw an accurate conclusion, or do you need a larger sample? What conclusions can you draw from comparing both sets of data? Submit your paper at the end of Module 4. SLP Assignment Expectations Answer all questions posted in the instructions. Use information from the modular background readings and videos as well as any good-quality resource you can find. Cite all sources in APA style and include a reference list at the end of your paper. Note about page length: Your ability to clearly articulate and explain these concepts is being assessed. The page length is a general guideline. A 3- or 4-page paper does not necessarily guarantee a grade of \"A.\" An \"A\" paper would include detailed information and explanations of all the assignment requirements listed above. The letter grade will be based upon demonstrated mastery of the content and ability to articulate and apply the concepts in the assignment. Keep this in mind while writing your paper. Required Materials Digital Readings Read section D from Lane, D. M., & Hebl, M. (n.d.). Online Statistics Education: Introduction. Retrieved from http://onlinestatbook.com/2/introduction/introduction.html Read sections A-H from Lane, D. M. (n.d.). Online Statistics Education: Research Design. Retrieved from http://onlinestatbook.com/2/research_design/contents.html Read sections External Validity, Sampling Terminology, Statistical Terms in Sampling, Probability Sampling, and Nonprobability Sampling from Trochim, W.M.K. (2006). Research methods knowledge base: Probability sampling. Retrieved from http://www.socialresearchmethods.net/kb/sampling.php My Smart Phone Daily Usage 1 My Smart Phone Daily Usage Through this paper an attempt is made to collect and study the data pertaining to my Daily Smartphone usage. The Smartphone usage includes time I spent on cellular calls and other networking and communication applications. I find myself more socially active with a wide network of peers and friends. This gives us an ideal opportunity to study the time I spent on smart phones on a daily basis. Data Collection: Data Collection Period The data collection is done by the researcher by studying the smart phone usage for a period of 10 days. The data sets represent actual usage and thereby removing any kind of data manipulation chances. Method of Data Collection To monitor the timings of the usage, I used inbuilt counters (for cellular calls). I also used an application to log time spent on various communication and entertainment applications that were during the data collection period. The data collection covers my activities from chatting with peers and friends to consumption of other entertainment material, for example, movies, music etc. The Target Value for my Data Analysis is 2 Hours Smartphone Usage. The following is the actual readings: Figure 1. Daily Smartphone Usage (in Minutes and Hours) Day Number 1 2 3 4 5 6 7 8 Duration Spent on Smartphone (in Minutes) 125 96 131 102 142 200 250 190 Converted to Hours 2.08 1.60 2.18 1.70 2.37 3.33 4.17 3.17 My Smart Phone Daily Usage 2 9 10 120 180 2.00 3.00 From the above data, the I also derived the following statistical calculations: Figure 2. Statistical Calculations for Data Collected Duration spend on Smart phone (in hours) Mean Median Standard Deviation Sample Variance Kurtosis Skewness Range Minimum Maximum Sum Count 2.56 2.28 0.82 0.68 (0.21) 0.76 2.57 1.60 4.17 25.60 10 After collecting the data, I developed a variation graph to study the fluctuations in the sample collection. Figure 3. Graph representing variations in the Data set Converted to Hours 4.50 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 1 2 3 4 5 6 7 8 9 10 My Smart Phone Daily Usage 3 From the above graph, it can be seen that my usage of smart phone increased sharply from Day 5 and continue to rise till Day 7 (Smartphone usage at the peak levels). This surge in the data is due to my increased smart phone usage during weekends. Day 5 (Friday) is when the week is ending and henceforth, there is a spike in my smart phone usage activity during this period of time. Variation from the Standard Usage Limit (120 Minutes): Figure 4. Daily Variation from the Standard 12 10 8 6 4 2 0 1 2 3 4 5 6 7 8 9 10 -2 Day Number Daily Set Target Converted to Hours Variance Conclusion On an average, I am spending more than 2 hours on smart phone. The median value is also similar to the mean value but due to some outliers that happened during weekends it is not similar to the mean value. The standard is 0.82 which small indicate that I spend almost 2 hours daily on smart phone. The skewness value is greater than 0 which indicate the presence of some outliers (weekend time spend) on smart phone. The range of the data is 2.57 hours which indicates the variability in the time I spent on the smart phones. The total time I spent in 10 Days duration is 25.60 hours which is quite high