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25 Cards in this Set
- Front
- Back
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Alpha |
should be bellow .05 it is the standard error when doing an analysis |
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Person Correlation |
correlation between two continuous variables |
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positive correlation |
one statistic goes up while the other one goes down |
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negative correlation |
both statistics go down |
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ordinal |
data is arranged in order from 1-10 |
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T-test |
measures the difference in mean of two different groups |
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variance |
different ways to measure variability |
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standard deviation |
it is the square root of variance |
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statistics |
set of math procedures to organize information and also data from sample |
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parameter |
data acquired from the population (value is numeric) |
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population |
set of all the individuals in the study |
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sample |
a subset of the population |
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continuous |
it never stops changing (it will always have decimals) |
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interval |
order categories such as 5 10 15 20 the interval in this situation is 5 |
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ration |
like interval but without meaning (the number 0 will never be in this) |
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nominal |
categories such as gender sex is must be something you can describe |
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frequency distribution |
a way to organize a useful tool for summarizing a large set of data |
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mean |
most common use...you add them all up and divide by half |
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mode |
the most frequent one |
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medium |
the middle number...if there are multiple you add them and divide by two |
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independent variable |
it is what effects the dependent variable |
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dependent vairable |
the outcome variable dependent on formation A+B=C |
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what are the differences of descriptive and inferential studies |
descriptive has a lot of information in the study and has been multiplied, inferential is an assumption because of what the study has found |
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range |
the distance covered by increases and decreases of the score standard deviation measures standard distance between score and mean |
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variability |
change to obtain measure of how spread out the score are in distribution |
