Why Measure
levels of measurement
Descriptive Statistics
Descriptive Con't
Central Tendency
100
process of assigning numerals to variables to represent quantities of characteristics according to certain rules.
What is Measurement
100
What's in a name
What is nominal
100
A set of statistics used used to characterize the shape, central tendency, and variability within a set of data, often with the intent to describe a population
What is descriptive stats
100
negatively skewed distribution
What is grouped right
100
Average, group score
What is mean
200
Describe the quality of quantity of a variable•Make absolute decisions based on a criterion–Is your vision good enough to fly a plane?•Choose between two courses of action•Assess change–Is someone improving with treatment?•Compare and discriminate between individuals or groups•Draw conclusions about the predictive relationship between variables
What is Functions of measurement
200
The term rank is often used to signify the placement of objects or events
What is ordinal
200
A set of techniques the uses the laws of chance and probability to help researchers make decisions about what their data mean and what inferences they can make from them
What is inferential stats
200
platykurtic
What is flat distribution
200
the absolute middle score
What is the median
300
nvented names for abstract variables that cannot be seen directly, but are inferred by measuring relevant or correlated behaviors that are observable.
What is construct
300
The intervals between ranks may not be consistent and may not be known
What is the disadvantage of ordinal data
300
N=the total set of scores for a particular variable
What is distribution
300
mesokurtic
What is normal distribution
300
most frequent score
What is the mode
400
Principles of measurement are basic to our ability to describe phenomena, demonstrate change or relationship, and to communicate this information to others
What is why measurement
400
-order characteristics of an ordinal scale, but also demonstrates known and equal distances, No true zero
What is interval
400
a table of rank ordered scores that shows the number of times each value occurred
What is frequency distribution
400
leptokurtic
What is high distribution
400
what happens when two modes occur
What is bimodal
500
pain, love, quality of life
What is construct
500
A score of zero represents a total absence of whatever property is being measured
What is ratio
500
positively skewed distribution
What is grouped left
500
Normal distribution
What is descriptive statistics only can apply to what
500
Range–Variance–Standard Deviation–Coefficient of variation (not going to cover)–Percentile (not exactly a measure of variability, more a measure of position within the distribution)
What is measures of variability