Question 1
What is the formula for calculating the variance of a dataset?
Question 2
If the mean of a dataset is significantly higher than the median, what does this suggest about the distribution?
Question 3
In a dataset, if the variance is low, what does this indicate about the data points?
Question 4
If the correlation coefficient between two variables is $-0.95$, what does this imply?
Question 5
What does a correlation coefficient of $0$ indicate about the relationship between two variables?