Statistics

Statistics is the gathering, organization, analysis and presentation of numerical information. It is pretty much Experimental Probability

raw data - unprocessed information collected for study variable - quantity being measured

• continuous - any quantity that has a value between a given range
• discrete - separate concrete values. has a hard cap. Not always integer. eg. shoe sizes(7, 7.5, 8) Parameters vs Statistics

Displaying

Frequency Table - convenient overview of the distribution of values of the variables Histogram - bar graph with no gaps but the area of the bars are proportional to frequencies of the values of the variable Relative Frequency - same information as histogram/bar graph but as a line graph. Cumulative Frequency - cumulative version of frequency. used for niche situations

Tendencies

• Measurements of Central Tendencies
• Skewed Distribution
• Grouped Data
• Weighted Means
• Modal Interval

Sampling

• Sampling Techniques
• Biases

Experiments

• Types of Experiments
• Experimental Study Prerequisites
• Experiment Cases
• Primary vs Secondary Data
• Surveys

Measures of Spread

• Measures of Spread
• Percentile Examples
• Quartiles
• Non-Symmetrical Quartiles
• Outliers
• Quartile Examples
• Standard Deviation
• Variance

Continuous Probability Distributions

• Continuous Probability Distributions