stats test Overview

Stats overview - test is Thursday

Mean, median and mode
Frequency Table

3.1 Types of distributions – Binomial – 5 step test
Binompdf command (eg. Exactly 17/20 free throws)

Standard Deviation – Kingston and Brooks Expressways

3.2 Mean and Standard Deviation
Mean of binomial distributions μ= np
Standard deviation

3.3 Normal Distribution
68 – 95 – 99% rule
Using “exact” z-scores ±1 ±2 ±3 σ

3.4 Standard Normal Distribution
- Using z-scores
- ShadeNorm – finds the % given z-scores

InvNorm - left to right
- finds z-score given %

3.5 Normal Approximation to the Binomial Distribution
npq > 10 μ= np
ShadeNorm

3.6 Confidence Intervals μ ± 1.96σ
1-Prop Z Int
Margin of error
% margin of error.