Statistics Lectures - 15
A series of free Statistics Lectures with examples & solutions in videos.
These lectures discuss parameters, statistics, sampling error, distribution of the sample mean and introduce the Central Limit Theorem.
Statistics - Lecture 42
Parameters, Statistics, and Sampling ErrorA characteristics that describes a population is called a parameter. Because it is often difficult (or impossible) to measure an entire population, parameters are most often estimated.
A characteristic that describes a sample is called a statistic.
Statistics are most often used to measure the value of unknown parameters.
Sampling error is any difference that exists between a statistic and its corresponding parameter.
Statistics - Lecture 43
Distribution of the Sample MeanThe Distribution of the Sample Mean is a probability distribution of all possible values of a sample mean, computed from a sample size n.
The standard deviation of the sampling distribution is also known as the Standard Error of the Mean.
Statistics - Lecture 44
The Central Limit TheoremThe Central Limit Theorem states that regardless of the shape of the population distribution, the distribution of the means will be approximately normal.
The distribution of the sample means will become more normal as its sample size increases.
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