• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/17

Click to flip

### 17 Cards in this Set

• Front
• Back
 Mathematical Operation 1. Square or square root 2. Multiply or divide 3. Operations contained within parentheses. 4. First perform operations within the sqaure root sign, then take the square root of the quantity. *Perform fractions above and below dividing line prior to dividing. Population Any defined groups of objects, organisms, or events (contains all members of a defined group) Sample Any subset of the population, usually meant to represent the population. Parameter describes or summarizes a population. (come from populations) Statistic describes or summarizes a sample and estimates a parameter. (come from samples) Measurement Assignment of numbers or values to levels of a variable according to a set of rules. Basis of scientific observation. Independent Variable is manipulated by the researcher. Dependent Variable is measured Confounding Variable is uncontrolled that influenced the dependent variable (independent does this also) Dichotomous Variable has only two categoried (either/or) Discrete Variable increase or decrease by whole units Continuous Variable can theoretically assue infinite number of values Scales of Measurement 1.Nominal or Categorical 2.Ordinal 3.Interval 4.Ratio Nominal or Categorical Measurment *Classified based on the presence or absense of qualities *Frequncy data *No information provided on order or magnitude of diferences *Ex: sex, race, religion, political party Ordinal Measurment *Classification according to degree of quality i.e. tall>normal>short *No information about the magnitude of difference Interval Measurment *uses a meaningful unit of measure *allows use of basic arithmetic functions *Ex: shoe size, Fahrenheit scale Ratio Measurment *adds an absolute zero point to interval scale (zero implies total absence of the characteristic *Ex:height and weight (2:1, 1:5)