11-12-08 - Psychology 206 Class Notes Sampling...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Psychology 206 – Class Notes – 11/12/08 Sampling Distributions Distributions of statistics are NOT scores How does this work? o Repeated Samples o Calculate Statistic o Make a distribution of the resulting statistics Recall, from Monday… We calculated or created: Specific Population Specific N Specific Statistic Sampling distribution of the sample mean Http://www.ruf.rice.edu/~lane/sat_sim/sampling_dist Java applet – sampling distributions IMPORTANT KEY CONCEPT : As the sample size (N) increases, the standard deviation of the sampling distribution of the sample mean decreases (the sampling distribution gets narrower, less variable).
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
THREE AMAZING FACTS (PROVEN) Sampling Distribution of the Sample Mean (Sampling Distribution) 1. The sampling distribution is normally distributed (regardless of shape of population distribution). o Even when the parent population is really skewed, bimodal, or even U-shaped, the SAMPLING DISTRIBUTION IS ALWAYS NORMAL It becomes more “NORMAL” looking as the sample size
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 2

11-12-08 - Psychology 206 Class Notes Sampling...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online