MAT-240 Final Exam Study Guide

Question Section Problem Type Instructor Tip HW Reference Problem 1 3.1 Determine the arithmetic mean, median, and mode of a variable from raw data. Open the data in StatCrunch. Use Stat -> Summary Stats -> Columns. From there you can find the values in question. HW #1, Problem #5 2 3.2 Determine the range, standard deviation, and variance of a variable from raw data. Same as question 1, just looking for measure of dispersion. HW #1, Problem #8 3 6.1 Distinguish between discrete and continuous random variables. Recall that counts are generally discrete variables, while measurements are generally continuous Variables. HW #1, Problem #11 4 6.1 Identify discrete probability distributions. Recall that the sum of individual probabilities must be 1 (or 100%). See page 323 of text for reference. HW #1, Problem #12 5 7.1 Graph a normal curve. Remember that the highest point of a normal curve will occur where the mean is. Meaning, if the mean is 10 the hight point of the graph will be above that value on the x-axis. No Reference Problem 6 7.2 Find and interpret the area under a normal curve. In this problem, you need to change the values to standard normal values (z-scores) and use the standard normal table to find the area or the StatCrunch Normal Calculator HW #2, Problem #7 7 8.1 Describe the distribution of the sample mean: normal population. Review page 404 of the textbook for help on this problem. HW #2, Problem #10 8 8.2 Describe the sampling distribution of a sample proportion. Review pge 416 of the textbook for help on