Exam 1 Study Guide: The Basics

  1. Identify whether the situation described is a descriptive statistic or an inferential statistic. Five parts. Look at homework 1.
  2. Identify whether the variable is categorical or numerical. Five parts. Look at homework 1.
  3. Identify the level of measurement described. Ten parts. Look at homework 2.
  4. Interpret the graph. Five parts. Look at homework 3.
  5. Interpret the graph. Five parts. Look at homework 3.
  6. Complete the data set so that it satisfies the given characteristics. You'll need to know the definitions of mean, median, and mode to do this. For example, if the mean is 20 and the first three numbers are 10, 12, and 45, what is the fourth number? Three parts.
  7. Create a graph. You should know how to create pie charts, bar charts, histograms, box plots, and stem and leaf plots.
  8. Various sums for a set of data are given. Find the mean, variation, variance, and standard deviation. Look at homework 4.
  9. Look at a histogram where the bars are one standard deviation wide. Determine the percent of the data that lies within one, two, and three standard deviations of the mean and whether or not 68-95-99.7 rule applies. Chebyshev's Rule is stated, see if your data follows that rule. Look at questions 3 and 4 on classroom activity 1.
  10. Find the measures of spread using the shortcut formula for variation. The number of values, the sum of the values, and the sum of the squares of the values are given. You will need to know the shortcut formula, it is not given on the test. Look at homework 4 question 2.
  11. Given two paired sets of numbers, find the sum of the squares of the deviations from the mean. The sums of the values and the sum of the squares of the values are given, find the mean, variation, variance, and standard deviation. Similar to classroom activity 2 and homework 4 question 2.
  12. The mean, median, range, standard deviation, and variance for a dataset are given. Determine what those statistics will be after the indicated transformation is applied. Six translations. Look at homework 5.
  13. Given a small set of data values, find the mean, median, mode, midrange, range, quartiles, a percentile, interquartile range, variation, variance, and standard deviation. Look at homework 4, and classroom activity 2.
  14. Use minitab to find the descriptive statistics for a data set using Stats / Basic Statistics / Display Descriptive Statistics. Be sure to know when to use the "by variables" and when to leave it blank. Know how to go into the statistics button and turn on or off certain statistics. Look at classroom activity 1.
  15. Use minitab to follow the instructions and the answer the questions based on the results. This is similar to the last question on classroom activity 1.


Note Card

We're going to try a little experiment here. Normally, there is not a notecard allowed on this exam, students are required to memorize formulas. But we can use this test to help you learn some good study skills for later on. One of those is how to prepare a notecard. So I'm going to allow you to use one side of up to a 4"×6" notecard.

Now the twist.

Some of you are crying foul! "What if I get a bad notecard?" This is why you're going to do the studying anyway. Having a notecard does not remove the need for studying. In fact, making a notecard is a good study device. It helps you organize your thoughts and prepare for the exam. It helps you focus on what you already know and what you need to learn. You normally wouldn't get a notecard at all and if you get a bad one, you've studied for it anyway, so just ignore the card. If you really know your stuff, you won't need to rely on the card.

When you get back your exam, I'm going to give the notecard back to the person who used it on the exam. That person will then comment on the notecard explaining how it was good or how it could be improved. If there were things that wasted space, let the person know, like "you wasted space with the formula for finding the population variance when he said we wouldn't need it" or "you really should look at the study guide to see what's on the test before making the notecard." Then you will return the notecard along with your comments to the originator of the card.

Points per problem

# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Total
Pts 5 5 10 10 10 8 6 8 8 8 16 24 12 10 10 150