Examlex
In which research method does a researcher use questionnaires or interviews to gather information about specific aspects of behaviour in a sample of participants
Z Test
A statistical test used to determine if there is a significant difference between a sample mean and a population mean, assuming data is normally distributed.
Standard Error
Standard error measures the precision of a sample mean estimate of a population mean, indicating how much the sample mean is expected to fluctuate from the true population mean.
Population Average
The mean value of a given characteristic within an entire population.
Sample Mean
The average of all observations in a sample, calculated by summing the values and dividing by the sample size.
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