SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences

SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences Permalink: https://nursingpaperessays.com/ soc-stat-csss-22…-social-sciences / ? Homework Assignment 6 Please use this form to record your answers and include any work that you would like to show the grader (you can paste in photos or scans of your hand-written work if you like). Save this document in Word, rtf, or pdf format and submit ONE document for grading via the course website. 1. A teaching assistant has selected a random sample of students in STAT 221 and compared the quiz performance of two groups within this sample: one group of students who regularly attended lectures and one group who did not regularly attend lectures. Her data show that 22 of the 30 members of the first group (lecture attendees) passed the quiz, only 10 of the 28 members of the second group (non-attendees) passed the quiz. a. Create a two-way table of quiz performance (passed / did not pass) by attendance status (attended / did not attend). Attendence/Result Attended Not Attended Passed 22 10 Not Passed 8 18 b. Describe, in percentages, the marginal distribution for attendance. Ø Attended = 22 + 8 / 22 + 8 + 28 * 100 = 51.72% Ø Not Attended = 48.27% c. Describe, in percentages, the marginal distribution for quiz performance. Ø Passed = 22 + 10 / 58 x 100 = 55.17% Ø Not Passed = 44.82% d. According to the data, does there appear to be an association between quiz performance and lecture attendance? Support your argument by referring to the conditional distribution of quiz performance. e. Use a chi-square test and .05 alpha level to test the null hypothesis that there is no association between quiz performance and attendance in the population. Make sure to report: 1) the critical value of the test statistic; 2) the value of the test statistic calculated from the sample data; 3) your decision about the null hypothesis; and 4) an interpretation of the meaning of your decision. 2. In preparing for the quiz, some students in the class studied more than others. The TA has data on a random sample of eight students, with each student’s grade on the 10-point quiz and the number of hours studied. The data are as follows: Student # Hours Studied Exam Grade 1 6 50 2 0 30 3 3 75 4 5 50 5 8 90 6 4 75 7 6 45 8 6 70 a. Calculate the Pearson’s correlation coefficient for the association between study time and the quiz grade. Ø P Correlation b/w hours and grade = 0.534 b. Provide an interpretation for the correlation coefficient. Ø There is a moderate correlation between hours studied and grade c. Do the sample data provide sufficient evidence with which to conclude that a real association exists in the population from which this sample was drawn? Explain your answer. Ø If alpha = 0.05 and since p-value of this test = 0.532 > 0.05 we will accept Ho and conclude that there is no correlation between hours and grade 3. An educational researcher interested in the consistency of school absenteeism over time studied a random sample of 8 high school students for whom complete high school records were available. The researcher counted the number of days of school each student missed while in the sixth grade and in the tenth grade. He obtained the following results: Student # Days Missed in 6 th Grade # Days Missed in 10 th Grade A 4 10 B 2 4 C 21 11 D 1 3 E 3 1 F 5 5 G 4 9 H 8 5 a. What is the strength and the direction of the association between the number of days missed in sixth grade and the number of days missed in tenth grade. Be sure to provide the statistic on which your answer is based. Ø In order to measure the strength between the number of days missed in the 6 th grade and the 10 th grade we can use Pearson’s correlation coefficient = 0.609 b. Is the association observed in the sample statistically significant? Explain your answer. Ø The p-value of the test = 0.109 > 0.05 and … SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences Get a 10 % discount on an order above $ 100 Use the following coupon code : NURSING10

Struggling to find relevant content? Order a custom essay on
SOC/STAT/CSSS 221: Statistical Concepts and Methods for the Social Sciences
Let our experts save you the hassle
Order Now
Calculate the price
Make an order in advance and get the best price
Pages (550 words)
$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
Sign up, place your order, and leave the rest to our professional paper writers in less than 2 minutes.
step 1
Upload assignment instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
s
Get personalized services with GPA Fix
One writer for all your papers
You can select one writer for all your papers. This option enhances the consistency in the quality of your assignments. Select your preferred writer from the list of writers who have handledf your previous assignments
Same paper from different writers
Are you ordering the same assignment for a friend? You can get the same paper from different writers. The goal is to produce 100% unique and original papers
Copy of sources used
Our homework writers will provide you with copies of sources used on your request. Just add the option when plaing your order
What our partners say about us
We appreciate every review and are always looking for ways to grow. See what other students think about our do my paper service.
Nursing
Thanks
Customer 452521, May 13th, 2021
Social Work and Human Services
Thank You!
Customer 452587, November 17th, 2021
Other
great
Customer 452813, July 5th, 2022
ENVIRONMENT SCIENCE
great
Customer 452813, June 26th, 2022
Management
Great job
Customer 452643, October 31st, 2021
Other
GOOD
Customer 452813, July 5th, 2022
Nursing
Thank you MyCoursebay team for your support. With your help I got an A for my past courses
Customer 452635, May 7th, 2022
Social Work and Human Services
Good Work!
Customer 452587, September 2nd, 2021
Nursing
Always perfect!!! Don is the best!
Customer 452453, July 27th, 2021
Ethics
thank you
Customer 452493, March 15th, 2021
Nursing
Looks good. Thank you!!
Customer 452525, April 27th, 2022
Social Work and Human Services
Excellent Work!
Customer 452587, July 28th, 2021
OUR GIFT TO YOU
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat
error: Content is protected !!

Save More. Score Better. Use coupon code SPECIAL for a 15%discount