SU1: Data, Probability, Sampling

2.1 Basic Probability Concepts

Chapter 1: Describing Data

1.1 Freq Tables, Freq Distributions, Graphic Presentation

Frequency Distribution (Qualitative Data)

Cumulative Frequency Polygon

Frequency Polygon

Histogram

Graphic Representation (Qualitative Data)

Pie Chart

Bar Chart

Frequency Table

1.2 Numerical Measures

1.2.1 Measures of Location

Mode

Median

1.2.2 Relative Positions of Mean, Median, Mode

Mean

a. Symmetrical distribution (same shape, bell shape, mean median and mode are equal)

b. positively skewed (long tail is to the right), mean is larger than median or mode

c. negatively skewed distribution (long tail is to the left, mean is smaller than median/mode)

1.2.3 Measures of Dispersion

Variance

Standard Deviation

Range (Largest - Smallest value)

Chapter 2: Discrete and Conitnuous Probability Distributions

2.1 Basic Probability Concepts

Probability

2.2 Discrete Probability Distributions

Random Variable

Discrete Random Variable

Continuous Random Variable

Binomial Probability Distribution (two mutually exclusive events - success or failure)

Poisson Probability Distribution (specified interval)

2.3 Continuous Probability Distributions

Uniform Probability Distribution

Normal Probability Distribution

Chapter 3: Sampling Methods and Central Limit Theorem

Sampling methods

Stratified Random Smapling

Systematic Random Sampling

Cluster Sampling

Simple Random Sampling

Sampling error

Central Limit Theorem