STA3022
Analysis of Variance and Covariance
Dr. ebnem Er
What is ANOVA?
If
we want to compare some attribute between
more than 2 groups, we use ANOVA.
ANOVA could be seen as an extension of the t-test
to the case of more than 2 groups.
The 2 key features

Answer the following questions involving Inferential Statistics
1) Is there a relationship between years of seniority and base pay for the sample? The
population? (Hint: Scatter chart)
Sample
In order to find if there exists a relationship, we will draw a

The corporate society we are living in is marred with diseases that have claimed most
lives. In this study, we will expound our study question in order to come up with solution or an
insightful recommendation on whether bladder cancer has any relationship

Surname 1
Name
Course Title
Professor
Date
Probability and Sampling
From the statistical analysis perspective, an increase in the size of the sample drawn from
the population, leads to a decrease in the variation incurred. Variation is usually estimated u

Surname 1
Name
Course title
Professor
Date
Multiple Regression
Steps when carrying out multiple regression using SPSS
Syntax;
Analyse >regression>linear
On the linear regression dialogue box,
Dependent variable > (prestg80)
Independent variable > (sex > s

STA2005S Regression 2013 Test
Internal Examiner: Mr A Clark
AVAILABLE MARKS: 50
PAGES: 5
1. Suppose that X (31) follows a multivariate normal distribution with probability
density function
f (x1 , x2 , x3 ) =
1
(2)3/2 |0.5
exp 0.5x21 0.5x22 0.5x23 0.5x1 x