SOC SCI 10B Chapter Notes - Chapter 12: Point Estimation, Statistical Parameter, Statistic
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X- is the sample mean, this is the most commonly used statistic: when using the sample means and a size n you can nd the point estimate or the population mean. The sampling distribution of the mean for samples if size n from the population is the probably distribution for all possible values of x. If the shape of the distribution of scores in the population is normal the shape of the sampling distribution is normal. If the shape of the distribution is approximately normal the shape of the sampling distribution is approximately normals. If the shape of the population is not normals then. If n is small the shape is unpredictables. If n is large the shape is approximately normal. A point estimate of a population parameter is the single number, computed from sample data, intended to predict the population parameter. A sample statistic is called an unbiased point estimate of a population parameter is.
