Math 170: Chapters 1 - 3 Study Guide
Some of the problems say to look at specific problems in the text. In these cases, the problem on
the test is one of the problems stated, or one or more parts of the problem stated.
- Identify whether descriptive or inferential statistics has been used. Three parts. Look at
- Identify the level of measurement (nominal, ordinal, interval, or ratio) which has been used.
Three parts. Look at problem 1.7.
- Identify each type of sampling as random, cluster, convenience, stratified, or systematic. Three
parts. Look at problem 1.12.
- Find the class boundaries, class midpoint, and class width for a given interval. Look at
- Create a stem and leaf plot. Look at problems 2.57 through 2.59.
- Find the mean (can use the calculator for the mean), median, and modal class for a frequency
distribution. Look at problems 3.12 through 3.21.
- For a sample set, find some statistics. Eight parts. The statistics may be: mean*, standard
deviation*, variance, minimum*, maximum*, median*, 1st quartile*, 3rd quartile*, range,
lower hinge, upper hinge, midrange, mode. The *'d problems can be found directly using the
- Know which statistics involve all the data values. Multiple choice. You should know the
mean, standard deviation, and variance do; the median, midrange, mode, and range don't.
- Know which statistics are greatly affected by extreme values. Multiple choice. You should
know the mean, standard deviation, variance, midrange, and range are; the median and mode
- Supply the term which best matches the definition. Eight parts. You should know the
definitions of: (chapter 1) population, sample, variable; (chapter 2) histogram, ogive; (chapter
3) empirical rule, five-number summary, median, midrange, mode, outlier, parameter, standard
deviation, statistic, variance.
- Know how to calculate the unbiased estimator for the population variance using the shortcut
formula (not the calculator shortcut).
Last updated: Tuesday, June 11, 1996 at 2:43 am
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