IS310 Finals

In a simple regression analysis (where Y is a dependent and X an independent variable), if the Y intercept is positive, then

None of these alternatives is correct.

The variable of interest in an ANOVA procedure is called

a factor

If we are interested in testing whether the proportion of items in population 1 is larger than the proportion of items in population 2, the

alternative hypothesis should state P1 - P2 > 0

If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means

can be approximated by a normal distribution

The sampling distribution for a goodness of fit test is the

chi-square distribution

A statistical test conducted to determine whether to reject or not reject a hypothesized probability distribution for a population is known as a

goodness to fit test

The mean square is the sum of squares divided by

its corresponding degrees of freedom

Larger values of r2 imply that the observations are more closely grouped about the

least squares line

In regression analysis, the unbiased estimate of the variance is

mean square error

In an analysis of variance, one estimate of σ2 is based upon the differences between the treatment means and the

overall sample mean

The standard error of x1 and x2 is the

standard deviation of the sampling distribution of x1 and x2

To avoid the problem of not having access to Tables of F distribution with values given for the lower tail, the denominator of the test statistic should be the one with

the smaller sample variance