Week2&3 statistics UOB

If there are a small number of features to analyze, which should we choose

When we include a dummy variable to represent categorical data, what will happen to the intercept?

A simple way of identifying novel or showing the existence of known groups is

Degrees of freedom refers to the number of _______ in a random vector

When we are preprocessing for PCA, we recentre the data so the mean is centered around..?

multiple regression determines the degree of the relationship between patterns of variation with

The chi square test is used for what kind of data?

Which of the following provides an approximation to the sum of independent randomvariables from any distribution

We can transform linear models using

Which of the following is not a method for finding the line of best fit in a regression model?

What is meant by the hat on theta (θ)?

The probability distribution of a statistic is called

The null hypothesis is denoted by H with what number?

In regression, what is meant by ε?

Functions with a curved mean employ the use of

Inferential statistics is taking a statistic from sample data and using it to say something about

There is an analogue of the CLT for other statistics, such as sample variance

In statistics we can accept the null hypothesis or accept the alternative hypothesis

What is collinearity

Models are just models, not reality

We might use a two tailed test when