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21 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
Absolute Value
|-7|=|+7|=7
none
Summation Operator
Σ
none
Independent Variable
Controlled or Manipulated

Types
Manipulated or Classifying
worked on
Dependent Variable
measure of effect of independent Variable
Measurement
Process of assigning numbers to characteristics according to a defined rule
#
Nominal Scale
Least precise, No logical order, Mutually exclusive

eg Race, Gender, Auto Manufacturer
Lowest
Ordinal Scale
Mutually exclusive, some logical order. Data catagories are scaled according to amount of characteristic they possess
2nd lowest
Interval Scale
Mutually exclusive, Have logical order, Scaled according to amount of characteristic they possess, Equal differences in characteristics are represented by equal differences in the number assigned to the catagories
0 is just another point on the scale -0 has no value-


Third highest
-3-2-1 0 1 2 3
Ratio Scale
Mutually exclusive, Have logical order, Scaled according to amount of characteristic they possess, Equal differences in characteristics are represented by equal differences in the number assigned to the catagories
0 is just another point on the scale-no value-

Has a true 0 it represents absence of the characteristic
0 means nothing present
Constant or

Variable
same for every member of the group

Take on differnt values
oposites
Skewed Distrobution
Skewed to the right or positively Skewed

scores toward the lower end
Uniform Or Rectangular Distrobution
evenly distributed

Rectangular shape
Symmetric or normal distrobution
Bell Shaped
Many scores to the middle and fewer to extrems
Leptokurtic Distrobution
Located at center
Platykurtic Distrobution
Cluster at center
Kurtosis
Degree of peakness

Mesokurtic = Moderate degree of peakness
Coordinate Axis
2 straight lines one horizontal and one verticle
Shows relationship between variables
Abscissa
horizontal or x Axis

has independent variable
Ordinate
Verticle or Y Axis

has dependent variable
Three Quarter High rule
The Y axis should be 3/4 high of the X axis
Cumulative Frequency Distribution
is constructed by adding the frequency of scores in any class interval to the frequency of all the class intervals below it on the scale of measurement
Midpoint F CF
32 7 10
27 2 3
22 1 1