Statistics and Regression Analysis Starter Quiz

The purpose of regression is to

Suppose the probability that Barry Bonds, a famous baseball player, gets a hit in a given at bat is p = 0.3, If Barry has 400 at bats in a single season (sample of 400 independent at bats), what is the mean and standard error of the sampling distribution p (the sample proportion of hits per at bat)?

Let x₁, x₂, …………, x₅₀ be independent observations from a distribution X which is not normal. Suppose it is known that the mean of this distribution is 48 and the standard deviation is 5. What can we say about the sample mean ?

Table below shows the variable x and its probability mass function p(x) value for different ‘x’. What is the mean of x ?

In the regression equation, R_it = α + β R_mt,