Psy 4700 | Statistics homework help

u01a1 Order of Operations, Scales of Measurement,Continuous Versus Discrete Variables, Frequency Distributions, and Percentiles

Complete the following problems within this Word document (do not submit other files). Show your work for problem sets that require calculations. Ensure that your answer to each problem is clearly visible. (You may want to highlight your answer or use a different type of color to set it apart.)

Problem Set 1.1: Order of Operations

Criterion: Apply the appropriate order of operations to solve equations.

Instruction: Apply order of operations rules and solve each of these:

a.

b. (8 + 42 – 4)/5

c. 8 – 2 * 3 + 4/2

d. 40 – 6 * 5 – 2

e. – 2

Note: To insert a square root symbol (), click the Inserttab in the Toolbar and in the Symbols section click Equation. (If Equation is grey and unresponsive, open a new document and complete your work there.) Next, click Radicaland choose the best option. The square root will appear inside a frame (see picture at right). To enter numbers into the square root, click the dotted line box. When done, click outside the frame. Then, you can copy and paste the work where you like.

Problem Set 1.2: Scales of Measurement

Criterion: Identify appropriate scales of measurement for stated variables.

Instruction: Identify the highest possible scale (nominal, ordinal, interval, or ratio) for the following:

a. Preferred political party.b. Number of children.c. Number of sodas you drank today.d. Temperature in Fahrenheit.e. Class rank.

(Assessment continues on next page.)

Problem Set 1.3: Scales of Measurement (2)

Criterion: Identify appropriate scales of measurement for stated variables.

Instruction: Identify the highest possible scale (nominal, ordinal, interval, or ratio) for the following:

a. Gender.b. Weight of an object.c. Book genre.d. Extraversion.e. Award categories at the Oscars.

Problem Set 1.4: Continuous Versus Discrete Variables

Criterion: Differentiate between continuous and discrete variables.

Instruction: Identify the below variables as continuous (C) or discrete (D):

a. Time it takes to fall asleep.

b. Number of languages you speak.

c. Number of adults living in a household.

d. Speed of an airplane.

e. Weight of cars.

Problem Set 1.5: Frequency Table

Criterion: Construct a table showing frequency and cumulative frequency.• Instruction: Use the provided data to complete the table below showing frequency and cumulative frequency.• Data: Twenty people were asked how many computers they own:

1, 2, 0, 1, 3, 4, 0, 1, 1, 1, 1, 1, 2, 1, 3, 3, 4, 0, 1, 1.

Frequency and Cumulative Frequency of Computer Ownership

Number of Computers

Frequency

Cumulative Frequency

(Assessment continues on next page.)

Problem Set 1.6: Grouped Frequency Table

Criterion: Evaluate and implement the most effective table option to show grouped frequency.• Instruction: A psychology professor wants to examine how many times her students missed class during the previous semester. Use the supplied data to complete Steps 1–4. • Data: Forty students registered in the class. The attendance records revealed the following number of absences for each student: 

0, 2, 0, 6, 3, 6, 7, 1, 1, 2, 1, 1, 3, 4, 5, 4, 0, 0, 1, 1, 2, 2, 2, 3, 5, 8, 4, 2, 1, 0, 2, 1, 0, 6, 8, 1, 2, 1, 1, 0.

Steps:1. Create a grouped frequency table in 2-miss intervals.2. Create a grouped frequency table in 4-miss intervals.3. Create a grouped frequency table in 6-miss intervals.4. Which one of these tables provides the clearest picture of the data? Explain why you think so.

Problem Set 1.7: Create Ascending and Descending Frequency Tables in SPSS

Criterion: Create ascending and descending frequency tables in SPSS.• Instruction: Complete the following steps:1. Open SPSS.2. Click New DataSet in the New Files area, and then click Open.3. Click the Variable View tab.4. In the Name area, type Attendance (we will use the scores from Problem Set 1.6).5. Our variable of Attendance is discrete so we will enter 0 in the Decimals column.6. Click the Data View tab.7. Enter all 40 numbers from Problem Set 1.6 on class attendance in the column labeled Attendance.8. In the Toolbar, click Analyze, select Descriptive Statistics, and then select Frequencies.9. Click Attendance and then click Arrow to send it over to the right side of the table.10. Click OK. Copy and paste the ascending values frequency table into this Word document.11. Go back to the Data View tab, click Analyze, select Descriptive Statistics, and then select Frequencies.12. Click Format and then click Descending Values. Click Continue and then OK. Copy and paste the descending values frequency into this Word document.

Note: Your answers to this problem set should be two separate SPSS outputs. Save your Attendance data to use in the next two problems.

(Assessment continues on next page.)

Problem Set 1.8: Construct a Bar Graph in SPSS

Criterion: Construct a bar graph in SPSS.• Instruction: The attendance data from Problem Set 1.6 is discrete. Complete the following steps to create a bar chart to examine this data:1. Go back to your SPSS Statistics Data Editor where yourAttendance data should be displayed.2. In the Toolbar, click Graphs, select Legacy Dialogs, and then select Bar.3. Click Simple and then click Define. Click Attendance and then click Arrow to send it over to the Category Axis box.4. Click OK. Copy and paste the bar graph below. (Hint: You might need to use Copy Special and click the .jpeg option.)5. Optional to answer: What is the shape of the distribution?

Problem Set 1.9: Construct a Pie Chart in SPSS

Criterion: Construct a pie chart in SPSS.• Instruction: Complete the following steps to create a pie chart to examine the attendance data from Problem Set 1.6.1. Go back to your SPSS Statistics Data Editor where yourAttendance data should be displayed.2. Go back to the Data View tab, click Graphs, select Legacy Dialogs, and then select Pie.3. Click Summaries for Groups of Case and then Define. Click Attendance and then click Arrow to send it over to the Define Slices By box.  4. Click OK. Copy and paste the pie graph below.

Problem Set 1.10: Construct a Histogram in SPSS

Criterion: Construct a histogram in SPSS.• Instruction: Use the supplied data to complete Steps 1–4. • Data: The air-conditioning unit in an office building went out for two days during a 20-day time period. The following is a list of the average daily temperatures in the building during this period:

72, 74, 72, 75, 71, 74, 75, 78, 76, 74, 72, 75, 88, 92, 79, 75, 72, 74, 76, 73.

Steps:1. Enter the data into SPSS using the variable label of Temperature.2. In the Toolbar, click Graphs, select Legacy Dialogs, and then select Histogram.3. Click Temperature and then click Arrow to send it over to the Variable box.  4. Click OK. Copy and paste the histogram into this Word document.







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