Department of Applied Statistics & Research Methods

Attempt all the questions (Follow the instructions)

Question 1

Create a two-way frequency table of Smoker and Sex and draw the bar diagram. Write the comment on it. (10 points)

Instructions

Download student survey data file from CANVAS

  • Step I. open Statkey click on two categorical variables
  • Step 2. click on upload data. Select sex and smoke from the data. Hit ok. You wits see  visualizations and two-way table.

Question 2
Create a live-number summary of SAT score along with its’ mean and cons tilts of Comment on the shape of the distribution of SAT score. Also write the summa °f re’s .e number summary. (10 points)

Instructions

  • Step I. Open Statkey click on one quantitative variable • click on upload data. Select SAT from the data. Hit ok. You can be able to create
  • Step 2 histogram and five number summary

 

Question 3

Create a five-number summary of GPA by gender. Create the side by side box plot of GPA score by gender. Comment on your results. (10 points)

Instruction

  • Step 1. Open Statkey click on one quantitative and one categorical variable
  • Step 2. Click on upload data. Select GPA and SEX from the data. Hit ok. You can be able to create five number summary and side by side box plot.

Question 4
Test the hypothesis, if student survey data provide the evidence of difference in GPA score of male and female? (10 points)

Instruction (Hypothesis Test)

  • Step 1. open Statkey click on test for difference between means (under Randomization
  • Step 2. Click on upload data. Select GPA and SEX from the data. Hit ok. You can able to find test statistics and p-value.

Question 5
Test the hypothesis, if student survey data provide the evidence of non-smoker’s GPA is higher than smoker’s GPA? (10 points)

Instruction

  • Step 1. open Statkey click on test for difference between means (under Randomization Hypothesis Test)
  • Step 2. Click on upload data. Select GPA and SMOKE from the data. Hit ok. You can be able to find test statistics and p-value.

Question 6

Write the summary of your finding from question 1 through 5 in one paragraph (don’t include any numbers) (1 0 points)