MATH399 Statistics—Lab Week 2
Added on 2021-04-21
8 Pages1761 Words89 Views
|
|
|
MATH399 Statistics—Lab Week 2Question 1 is worth 5 points and each question after that is worth 4.5 points, for a total of 50 points for the lab.Name: _______________________Statistical Concepts:Using ExcelGraphicsShapes of distributionsDescriptive statisticsNOTE: Directions for all labs are given based on Excel 2013 for Windows. If you have another version of Excel, you may need to research how to do the same steps.Data in ExcelExcel is a powerful, yet user-friendly, data analysis software package. You can launch Excel by finding the icon and double clicking on it. There are detailed instructions on how to obtain the graphs and statistics you need for this lab in each question.There is also a link to an Excel how to document on the iLab page where you opened this file. Further, if you need more explanation of the Excel functions youcan do an internet search on the function like “Excel standard deviation” or “Excel pivot table” for a variety of directions and video demonstrations.Data have already been formatted and entered into an Excel worksheet. You will see the link on the page with this lab document. The names of each variable from the survey are in the first row of the worksheet. All other rows of the worksheet representcertain students’ answers to the survey questions. Therefore, the rows are called observations and the columns are called variables. Below, you will find a code sheet that identifies the correspondence between the variable names and the survey questions.Survey Code Sheet: Do NOT answer these questions. The code sheet just lists the variables name and the question used by the researchers on the survey instrument that produced the data that are included in theExcel data file. This is just information. The first question for the lab is after the code sheet.Variable NameQuestionDriveQuestion 1: How long does it take you to drive to the school on average (to the nearest minute)?StateQuestion 2: In what state/country were you born?ShoeQuestion 3: What is your shoe size?HeightQuestion 4: What is your height to the nearest inch?SleepQuestion 5: How many hours did you sleep last night?GenderQuestion 6: What is your gender?Version 20160511
CarQuestion 7: What color of car do you drive?TVQuestion 8: How long (on average) do you spend a day watching TV?MoneyQuestion 9: How much money do you have with you right now?CoinQuestion 10: Flip a coin 10 times. How many times did you get tails?Frequency Distributions1.Create a frequency table for the variable State. In the Excel file, you can click on Data and then Sort and choose State as the variable on which to sort. Once sorted, you can count how many students are from each state. From that table, use a calculator to determine the relative percentages, as well as the cumulative percentages. In the box below, type the states from the database in a column to the left, then type the counts, and relative and cumulative frequencies to the right of the respective state.Using the data in the table, make a statement about what the frequency counts or percentages tell about the data.Table 1: The frequency distribution table of StateThe “IL”, “MI” and “SC” states have maximum frequencies (4). These states each have relative frequencies 11.429%. Many of the students were born in these states.“GA”, “KY” and “OH” states have least counts (1). These states each have relative frequencies 2.857%. Very few people were born in those states. Version 20160511
Creating Graphs2.Create a bar chart for the frequency table in Question 1. Select the State variable values. Click on Insertand then click on the arrow on the bottom right of the Chartsarea and select Clustered Column and click OK. (Again, different versions of Excel may need different directions.) Add an appropriate title and axis label. Copy and paste the graph here.Figure 1: Frequency Distribution of StaesCAFLGAILKYMINVNYOHORPASCTX00.511.522.533.544.5Frequency Distribution of States StatesFrequencies3.Create a pie chart for the variable Car. Select the column with the Car variable, including the title of Car. Click on Insert, and then Recommended Charts. It should show a clustered column and click OK. Once the chart is shown, right click on the chart (main area) and select Change Chart Type. Select Pie and OK. Click on the pie Version 20160511
End of preview
Want to access all the pages? Upload your documents or become a member.
Related Documents