# Statistics

Mind Map by Ross McKay, updated more than 1 year ago
 Created by Ross McKay over 6 years ago
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1

### Description

Statistics revision mind map

## Resource summary

Statistics
1. Sampling
1. Quota
1. Convinience
1. Straified
1. Random
1. Cluster
1. Systimatic
2. Calculations
1. Standard Deviation
1. Calculates Average distance from the mean
2. Spearmans Rank Corrolation Coefficient
1. Tests for corolation
1. Positive
1. Negative
2. Variance
1. Similar to Standard devation
1. Standardised Scores
1. Standardised Score = (Value - Mean) / Standard Deviation
1. Anything above 0 is better than average
1. Less than 0 is worse than the mean
2. Averages
1. Mean
1. Median
1. Order all the values and find the middle
2. Range
1. Mode
1. Most common value
2. IQR
1. LQ
1. 1st quarter
2. UQ
1. 3rd quarter
2. Graphs and Charts
1. Histograms
1. Moving Averges
1. 4 point
1. 3 point
2. Z charts
1. Quality assurance
1. Scatter diagrams
1. Test for corolation
1. Positive
1. Negative
2. Probability
1. Scale
1. Impossible
1. 0
2. Even chance
1. 0.5
2. Unlikely
1. 0.25
2. Likely
1. 0.75
2. Certain
1. 1
3. Tree Diagrams
1. Multiply along branches
1. End results should add up to 1
1. Fractions or percentages
2. Data Comparison
1. Box Plots
1. Visual comparaison
1. Maximum
1. Minumum
1. IQR
1. UQ
1. LQ
1. Range
2. Standardised Scores
1. Index Numbers
1. Simple Index Numbers
1. Percentages
1. Index Number = (Value / Value in base year) x 100
2. Chain Based Index numbers
1. Index Number = (Value in previous year / Value in current year) x 100
2. Weighted Index Numbers
1. Weighted Index Number = Σ(Index Number x Weight) / Σ Weights
3. Data Comparison Cont.
1. Crude Rates
1. How many in every thousand
2. Standardised Rates
1. More useful than crude rates

### Similar

Chapter 7: Investigating Data
Statistics Key Words
The Exponential Model
HISTOGRAMS
FREQUENCY TABLES: MODE, MEDIAN AND MEAN
CUMULATIVE FREQUENCY DIAGRAMS
TYPES OF DATA
All AS Maths Equations/Calculations and Questions
GCSE Maths Symbols, Equations & Formulae
Fractions and percentages
GCSE Maths: Understanding Pythagoras' Theorem