## Math 113 - Exam 1 Study Guide (Chapters 1 - 2)

1. Vocabulary: A definition is given. Supply the term that is best defined. Five parts. Concentrate on the following areas:
1. Population vs Sample
2. Parameter vs Statistic
3. Symmetric Distribution vs Skewed Distribution
4. Class Limits vs Class Boundaries
5. Mean vs Median vs Mode vs Midrange
2. Identify each number as discrete or continuous. Two parts.
3. Determine which type of sampling (random, systematic, stratified, cluster, convenience) is used. Five parts.
4. Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Four parts.
5. Know which measure(s) of central tendency are resistant to change and which are affected by extreme values.
6. Know which measure(s) of central tendency use all the data values and which don't.
7. You will be given the mean, median, range, standard deviation, and variance for a sample. A transformation is then applied to the data from the sample, and you need to indicate what the new values of the statistics are. Two parts. This is from the lab.
8. Given sample data, use the calculator to find the mean, standard deviation, variance, and median. Create a stem and leaf plot and a box plot. Find a specific percentile. Seven parts. You will need to know how to perform one variable statistics with your calculator with an xlist, but a frequency of one.
9. Given a frequency distribution, use the calculator to find the mean, standard deviation, variance, and median. Find the mode. Five parts. You will need to know how to perform one variable statistics with your calculator with an xlist and frequency.
10. Given the maximum value, the minimum values, and the number of classes to create, find the class width, a suitable lower class limit for the 1st class, the upper limit for the first class, and the lower boundary for the first class. There are more than one lower limits which are possible, but you only need to give one. The answers for the rest of the problem will be based upon the answer you give for the lower class limit.

### Notes:

• None of the problems are directly from the text.
• References to data obtained from the Internet are given on the test. They may be ignored for purposes of the exam.
• Be sure to bring your calculator.

#### Points per problem

 1 2 3 4 5 6 7 8 9 10 Total 10 4 10 8 2 2 10 21 15 12 94