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Third Property. Sample size and the Standard Error lav-5
- The larger the sample snze, the smaller the standard error of
the mean i
batik9"- Q ak Example Gt ti 1 9: ML: 51 m.
- Population standard deviation = 100 {Tm n: "31 *1: '

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lity of selecting someone with an IQ below
' What is the probabi Probability of an M below 132
- 5. Determine probability below 132:
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Example 2
- What percentage of people have le below 91?
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Percentage of I05 below 91 l U
* 1 Sketch normal GLA

Sampling Distributions
You should know everything there is to know about . . .
- Sampling distributions
Mean of sampling distribution
Sample size
*Central limit theorem
Inferential Statistics
- Experimental method in the behavioral sciences
-Make a hypoth

-+1 on tax bls
- If we had compared raw scores, we might have concluded
that Sen. Klott voted consistently conservativer
- Review: What can 2 scores do for us?
- 1. The z score better describes the place of the raw score in occu rre nce were innite
Probab