EHRD 391 - Exam 1 Questions and answers, latest updates. VERIFIED.

EHRD 391 - Exam 1 Questions and answers, latest updates. VERIFIED. Data is - -A record of observation / event EX: Test score/ grade Data set is... - -A collect of observations EX: Test scoreS / GradeS Descriptive Stats - -1. Used to organize and describe the characteristics of a collection of data 2. Measures central tendency (CT) and measures of variability Inferential Stats - -1. Used to make generalizations from a smaller group of subjects ( a sample) to a larger group of subjects ( a population) 2. Use of incomplete data Population - -A group of people that have at least one characteristic in common Sample - -A subset of a population Statistic - -A summarized value of a sample Parameter - -A summarized value of a population Variables - -A characteristic of a person that can take on different values EX: achievement/attitude/knowledge Types of Variables - -1. Quantitative 2. Qualitative 3. Continuous 4. Discrete 5. Univariable data 6. Bivariate Data Types of Variables: Quantitative - -Represent differing amounts of the characteristic - numerical data EX: Age/ intellengence/run time/ etc Types of Variables: Qualitative - -Categorical - Represent differing amounts Types of Variables: Continuous - -Variables that can take on any value EX: number of free throws / GRE scores / # of students Types of Variables: