Statistics Midterm.docx - MIDTERM STUDY GUIDE 1 Know the...

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MIDTERM STUDY GUIDE 1. Know the difference between DESCRIPTIVE and INFERENTIAL statistics o DESCRIPTIVE statistics simply DESCRIBE a sample. In other words, adding up numbers of baskets made by the Bulldogs during a basketball game, or adding up a number of people who attended the game , would be examples of descriptive statistics.
o DESCRIPTIVE statistics- are Procedures for organizing and summarizing data. Describe the important characteristics of a data set.
How does any score compare?
2. Be able to identify DEPENDENT vs INDEPENDENT variables o DEPENDENT/INDEPENDENT – Psychological research wants to measure effect (s) of independent variable on dependent variable (the cause)
A nurse is measuring a person’s temperature one hour after taking one of two medicines. She believes one medicine is more effective than another at reducing fevers. What is the INDEPENDENT variable? (MEDICINE) – what is being manipulated – is the medication
SEE QUESTION 15 in Assignment 1 – A nurse weighs who have been on either on Weight Watchers or the Atkins Diet for 2 weeks to see which diet returns in the
3. Be able to identify NOMINAL, ORDINAL, RATIO, and INTERVAL Variables o NOMINAL -Simply categorizes or classifies information (The name of your favorite meal (breakfast, lunch, or dinner) is an example of which of the following scales of measurement)
i.e. Gender (male vs female), Political affiliation, telephone number/SSN, Football jersey numbers (there is NO meaning to the numbers –do not average and say higher jersey average is better) Numbers are usually used to distinguish among the objects Eg. – male= 1 female = 2 –dean=1 chairperson =2 director =3 o ORDINAL -Has characteristics of nominal set Numbers used only to place objects, people, or events in order. Ranks (orders)

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