RES 341 Week 4 Individual Assignment Quiz Recent

1. Individual Assignment: Quiz

Complete a quiz on topics covered in the previous weeks.

Research 341

Each question worth 1 point

1. Determine the mean median and mode for the following group

Group 1: 22 29 12 22 25 24 19 22 10 20 21

2. Determine the mean median and mode for the following group

Group 2: 3 2 10 3 7 5 12 14 9 9 8

3. For the following 10 scores, compute the range, the standard deviation and the variance:

5 7 3 4 5 6 7 2 5 3

4. What is the maximum and minimum scores of the following data

32 36 31 30 33 33 36 37 39 33 31 30 33 39 34 38

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Learning Team Assignment: Descriptive Statistics Paper

Write and submit a 1,050-1,200-word paper, adding to your Week Three paper, examining the data you have collected and drawing conclusions based on your findings.

Include the following:

Data analysis using descriptive statistics

Calculate the measures of central tendency, dispersion, and skew for your data.

Display your descriptive statistical data using graphic and tabular techniques.

Frequency distribution

Histogram

Based on your skew value and histogram, discuss the best measures of central tendency and dispersion of your data. Justify your selection.

Conclusions

Discuss whether your research findings answered your problem statement—the research question—or if more research might be necessary.

What is an example of a research problem at your organization that would benefit from the use of either descriptive statistics or probability distribution statistics?

Individual Assignment: Quiz

Complete a quiz on topics covered in the previous weeks.

Research 341

Week 5 Quiz

1. A university wants to estimate the average amount of money that students spend on books in a semester. It takes a random sample of 45 students and finds that the average amount of money spent was $282 with a standard deviation of $21. Find a 95% confidence interval estimate for the true mean amount of money spent on books in a semester

2. A local public television station, which broadcasts educational programs, is soliciting contributions from its audience during pledge week. The master of ceremonies states that the average contribution of its members is $47. do you think that this average is the mean mode or median? Why?

3. The Statistical Bulletin published by the Metropolitan life insurance company reported 2% of all Americans birth results in twins. If a random sample of 8000 births is taken, find the mean, variance and standard deviation of the number of births that would result in twins.

4. A survey of 30 adults found that the mean age of a person’s primary vehicle is 5.6 years. Assuming the standard deviation of the population is .8 years, find the 95% confidence interval of the population mean.

5. Find everything to the left of Z= 2.42