April 25, 2009 - Final Exam sample questions to review (do not answer)

Examples of final exam questions to review: (*** please note, you can answer these questions, for extra credit - in your work groups -- if you have extra time)

The salaries of employees in a government agency can be classified as:
a) Quantitative data
b) Qualitative data

In a recent study of 400 randomly selected adults, the researchers found there is a
relationship between smoking cigarettes and developing emphysema." Which type of
statistics does the statement describe?
a) Inferential statistics
b) Descriptive statistics

What is the level of measurement for the data that can be classified according to color?
a) Ordinal
b) Nominal
c) Interval
d) Ratio

If the null hypothesis is rejected when in fact it is true, which type of error has been
committed?
a) Type I error
b) Type II error

Which of the following values represents a correlation coefficient?
a) –1.45
b) 0.0001
c) 1.05
d) 100

What is the type of correlation for the regression line yˆ = 5.12x − 0.3?
a) Positive linear correlation
b) Negative linear correlation

Assume that the variables, x and y, have a significant correlation. Given that the equation of
a regression line is y = –2x + 10, what is the best predicted value for y if x = 3?
a) –10
b) 4
c) 5
d) 10