To find percentiles and quartiles, data must first be arranged in ascending order. (True or false?)

To find percentiles and quartiles, data must first be arranged in ascending order.
 
  Indicate whether the statement is true or false

Q. 2

The covariance between two random variables is the correlation between the two variables divided by the product of their standard deviations.
 
  Indicate whether the statement is true or false

Q. 3

Explain the difference between the terms variable and data. Include an illustration that demonstrates this difference.
 
  What will be an ideal response?

Q. 4

The F distribution is constructed as the ratio of two Student's t random variables; each divided by its degrees of freedom.
 
  Indicate whether the statement is true or false