Part $2$

Conduct your own statistical data analysis project, the Screen Time Project. Complete the following $6$ Steps SHOWING all steps and calculations work with explanation where needed.

Step $1-$ Survey $10$ friends and family. Ask each of them how much screen time they have had either for the last $7$ days $($each day$)$ or the average for the last $7$ weeks $($each week$).$ So your screen time survey data set should contain a total of $70$ values. Using this data, create a table to collect this data or use a Google form $($how to find screen time on android and iPhone$).($Include your handmade data table or spreadsheet with your assignment submission$).$

Step $2-$Read this article: Sample vs Population Standard Deviation. Which formula will you use for your sample and why? Include this information with your standard deviation calculations work and in your Final Report $($Step $6).$

Step $3-$ Calculate the mean and standard deviation. Write out and explain each formula. You can do all the calculations yourself or use Google Sheets. Use Google Sheets to calculate the standard deviation.

Step $4-$ Using this data and the z$-$score table what percent of oung people spend over $10$ hours a day looking at their phones?

Step $5-$ Using the z$-$score table, based on your data, how much screen time would fall into the top $5\%?$ How much would fall into the bottom $5\%.$

Step $6-$ Using the normal distribution tables, write a report based on your data. Summarize the above steps and include information about the ages and gender of the people surveyed. Do you think the data is the same for all age brackets? How could you find out? How many hours are within one standard deviation of the mean, and any other relevant information. Lastly, use your information to draw your own conclusions.

Additional Helpful Hints & Tips

When doing this Unit $8$ Assignment make sure to show all your work. To get full credit for this assignment, you need to show and explain each step of what you computed. Write out each formula you use even though you may have used a statistical calculator or the spreadsheet to perform the operation.

Before submitting your work for grading, always take the time to carefully review the instructions in this document and look at the Grading Rubric provided to make sure that you have completed all required tasks and to see how the assignment will be graded.

Submitting your work:

Click on the "Add Submission" button to upload a text document. PDF is the required file format. $($From Word, choose 'save as$\text{'}$ from the file menu; select PDF as the file format. From Google Docs., go to the File Menu and select Download as a PDF$).$ We cannot open other file formats, e$.$g$.,$ pages, heic, etc. Alternatively, you can use the text box on the submission page. You can create tables, add images, etc., using the formatting tools; click the first button on the menu bar to access them.

If you do the work by hand, on paper, you will need to either scan or photograph it$.$ Make sure you save the image in a common file format; PDF is always the preferred file format. However, you can also use JPEG, GIF, or PNG$.$ We recommend you put your file on a shared hard drive like Dropbox, Google Drive, iCloud, One Drive, etc. Use the online text box to provide us with the URL to the file. Remember to set the permissions on the file to 'anyone with a link'.