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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
Absolute Value
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|-7|=|+7|=7
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none
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Summation Operator
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Σ
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none
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Independent Variable
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Controlled or Manipulated
Types Manipulated or Classifying |
worked on
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Dependent Variable
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measure of effect of independent Variable
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Measurement
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Process of assigning numbers to characteristics according to a defined rule
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#
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Nominal Scale
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Least precise, No logical order, Mutually exclusive
eg Race, Gender, Auto Manufacturer |
Lowest
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Ordinal Scale
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Mutually exclusive, some logical order. Data catagories are scaled according to amount of characteristic they possess
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2nd lowest
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Interval Scale
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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
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Ratio Scale
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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
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Constant or
Variable |
same for every member of the group
Take on differnt values |
oposites
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Skewed Distrobution
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Skewed to the right or positively Skewed
scores toward the lower end |
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Uniform Or Rectangular Distrobution
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evenly distributed
Rectangular shape |
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Symmetric or normal distrobution
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Bell Shaped
Many scores to the middle and fewer to extrems |
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Leptokurtic Distrobution
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Located at center
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Platykurtic Distrobution
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Cluster at center
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Kurtosis
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Degree of peakness
Mesokurtic = Moderate degree of peakness |
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Coordinate Axis
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2 straight lines one horizontal and one verticle
Shows relationship between variables |
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Abscissa
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horizontal or x Axis
has independent variable |
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Ordinate
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Verticle or Y Axis
has dependent variable |
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Three Quarter High rule
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The Y axis should be 3/4 high of the X axis
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Cumulative Frequency Distribution
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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
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Midpoint F CF
32 7 10 27 2 3 22 1 1 |