Question:
Report on the journal (debating, summarize, discuss,...).
Report is to be 3 pages in APA format with a minimum of two references.
Complete and attach the following problems to the report.
Research and report on a journal(s) or other periodical article(s) with relevancy and application to Statistics in the management field. Report on the journal (debating, summarize, discuss,...). Report is to be 3-5 pages in APA format with a minimum of two references. Complete and attach the following problems to your report.
1 A sample of 12 people was asked how much change they had in their pockets and wallets. The responses (in cents) are 52 25 15 0 104 44 60 30 33 81 40 5 Determine the mean, median, and mode for these data.
2. A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week. The responses are 5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6
a. Compute the three statistics that measure central location.
b. Briefly describe what each statistic tells you.
3. An investment you made 5 years ago has realized the following rates of return: Year 1 2 3 4 5 Rate of Return -.15 -.20 .15 -.08 .50
a. Compute the mean and median of the rates of return.
b. Compute the geometric mean.
c. Which one of the three statistics computed in Parts a and b best describes the return over the 5-year period? Explain.
4. Calculate the variance of the following data. 9 3 7 4 1 7 5 4
5. Determine the variance and standard deviation of the following sample. 12 6 22 31 23 13 15 17 21
6. A friend calculates a variance and reports that it is -25.0. How do you know that he has made a serious calculation error?
7. Calculate the first, second, and third quartiles of the following sample. 5 8 2 9 5 3 7 4 2 7 4 10 4 3 5
8. Refer to Exercise 4.37. Determine the interquartile range.
9. Xr04-57 A retailer wanted to estimate the monthly fixed and variable selling expenses. As a first step she collected data from the past 8 months. The total selling expenses (in $thousands) and the total sales (in $thousands) were recorded and listed below.
10. Refer to Exercise 2.87. Compute the coefficients of the least squares line and compare your results with the scatter diagram.