 Probability Distributions

Mind Map by , created about 6 years ago

HBS108 (Descriptive Stats) Mind Map on Probability Distributions, created by shirley.ha on 09/10/2013. 52 1 0  Created by shirley.ha about 6 years ago
Frequency distributions & data in tables and graphs
P-values, Generalisability, Study Limits
Prob Methods of sampling
The Great Gatsby: Chapter Summaries
GCSE Revision: Christianity
Topic 8.4 Statistical Inference, Statistical Significance and Hypothesis Testing
Measures of central tendency
Null hypoth, chi-squares, p-values, CI
Measures of dispersion
Topic 8.2: Descriptive Stats
Probability Distributions
1 standard deviation has a close relationship with the normal distribution or bell-shaped curve
2 Aka sample distributions & distibution patterns
2.1 distribution of all possible values that can be taken by that statistic.
3 formed by calculating that statistic for each of a large number of samples of the same size that are drawn randomly from the population
4 Normal distribution curve aka standard normal distribution
4.1 continuous and can display any value from a dataset; it is a smooth, bell-shaped curve that is symmetric about the mean of the distribution.
4.1.1 symbol for the sample mean is .
4.2 defined by a formula in which there are only two sample variables
4.2.1 mean and standard deviation (SD).
5 NORMAL DIS = PROB DIS so the area under the curve is equal to 1
5.1 calculating probabilities using curve