BSc Data Science SEM IV 2022 2023 March 2023 DS TESTING OF HYPOTHESIS Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q2 All questions carry equal marks
2. Q1 Attempt the following (Any Three) [ 15 marks
   • a. Explain characteristics of hypothesis t b. Explain strategies for hypothesis testing
   • c. Explain types of errors and level of significance in hypothesis
   • d. Explain t-test for mean p (6 unknown)
   • e. Given the p-values for hypothesis tests. Use the P-value to decide whether to reject when the level of significance is a = 0.10
   • f. For each claim, state Ho and H, in words and symbols. Then determine whether the hypothesis test is left-tailed test, right-tailed test or two-tailed test. Sketch a normal sampling distribution and shade the area for the P-value
   • i. A school publicizes that the proportion of its students who are involved in at least One extracurricular activity is 61%
   • ii. car dealership announces that the mean time for an oil change is less than
3. Q2 Attempt the following (Any Three) 15 marks
   • a. Explain test for homogeneity
   • b. Explain chi-square distribution test for single variance
   • c. Explain chi-square contingency table test
   • d. Explain packages used for finding goodness of fit test, variance test, Mann-Whitney test in R and Python
   • e. A two-tailed F-test conducted on below samples produced the value 2.287. Complete the procedure for F-test and state whether to reject or fail to reject the null hypothesis
   • f. Compute Ux, Uy and U for the following samples for Mann-Whitney test
4. Q3 Attempt the following (Any Three) [ 15 marks
   • b. Explain Friedman test
   • c. Explain two-factor ANOVA test
   • d. Write a short note on Mood’s Median test
   • e. List and explain various packages used for finding ANOVA in R and Python Explain MANOVA test with example VCD/9 SEM-IV TESTING OF HYPOTHESIS 75M ().4 Attempt the following (Any Three) [15
   • a. Explain ARMA model
   • b. Explain generalized additive model
   • c. Write a short note on polynomial regression
   • d. Explain spatial series model Explain trend analysis in trading Explain multiple linear regression
5. Q5 Attempt the following (Any Three) [15
   • a. Explain the steps for creating a great data story
   • b. Explain the importance and benefits of data storytelling
   • c. Explain the elements of infographic design
   • d. Explain the steps in designing
   • e. Explain the difficulties faced in good communication
   • f. Explain the contents for general documentation storage file

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