stats
What is the definition of mean in statistics?
The sum of all values divided by the number of values
What does the term 'standard deviation' measure?
The amount of variation or dispersion of a set of values
What does the 'P-value' represent in statistics?
The probability of obtaining a test statistic result at least as extreme as the one that was actually observed
What is the formula for calculating the variance of a data set?
Sum of squared differences from the mean divided by the number of values
What is the purpose of a hypothesis test in statistics?
To determine if there is enough evidence to reject a null hypothesis
What does the term 'correlation coefficient' measure?
The relationship between two variables
What is the central limit theorem in statistics?
The theorem that states as the sample size increases, the sample mean approaches the population mean
What is the purpose of ANOVA in statistics?
To test if there is a significant difference between the means of three or more groups
What is the formula for calculating the confidence interval in statistics?
Mean plus or minus the margin of error
What is the purpose of regression analysis in statistics?
To test for a relationship between two or more variables