Exam (elaborations)
STA1502 EXAM PACK 2022
- Institution
- University Of South Africa
STA1502 EXAM PACK 2022 - STA1502 - Statistical Inference I
[Show more]
Content preview
STA1502 EXAMPACK 2022
The course notes for Statistical Inference
, lOMoARcPSD|7651861
STA1502/1
Department of Statistics
STA1502
Statistical inference I
Study guide for STA1502
Downloaded by Mandla Msibi (mandlamsibi81@gmail.com)
, lOMoARcPSD|7651861
i STA1502/1
CONTENTS
ORIENTATION iii
STUDY UNIT 1
1.1 Introduction 1
1.2 Inference about the Difference Between Two Population Means: 1
Independent Samples
1.3 Observational and Experimental Data 9
1.4 Inference about the Difference Between Two Population Means: 9
Matched Pairs Experiment
1.5 Inference about the Ratio of Two Variances 19
1.6 Self-correcting Exercises for Unit 1 22
1.7 Solutions to Self-correcting Exercises for Unit 1 23
1.8 Learning Outcomes 27
STUDY UNIT 2
2.1 Introduction 28
2.2 Inference about the Difference Between Two Population Proportions 28
2.3 One-Way Analysis of Variance 34
2.4 Multiple Comparisons 43
2.5 Analysis of Variance experimental designs (read only) 47
2.6 Randomized Block(two-way) Analysis of Variance 47
2.7 Self-correcting Exercises for Unit 2 51
2.8 Solutions to Self-correcting Exercises for Unit 2 52
2.9 Learning Outcomes 55
STUDY UNIT 3
3.1 Chi–square test 57
3.2 Chi-squared goodness-of-fit test 58
3.3 Chi-squared test of a Contingency Table 62
3.4 Summary of test on nominal data 64
STUDY UNIT 4
4.1 Simple linear regression and correlation 70
4.2 Estimating the coefficients 70
4.3 Error variable: required conditions 75
4.4 Assessing the model 76
4.5 Using the regression equation 77
4.6 Regression diagnostics 77
Downloaded by Mandla Msibi (mandlamsibi81@gmail.com)
, lOMoARcPSD|7651861
ii
STUDY UNIT 5
5.1 Non parametric statistics 82
5.2 Wilcoxon Rank Sum Test 82
5.3 Sign test and Wilcoxon signed rank sum test 86
STUDY UNIT 6
6.1 Time series analysis and time series forecasting 96
6.2 Components of time series and smoothing possibilities 96
6.3 Smoothing techniques 97
6.4 Trend and seasonal effects 100
6.5 Introduction to forecasting 102
6.6 Forcasting models 102
Downloaded by Mandla Msibi (mandlamsibi81@gmail.com)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller STUDYCENTER2024. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R75,07. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67232 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now