The covariance of the following sample data of four (X, Y) pairs: ...

[MGLQZ]

The covariance of the following sample data of four (X, Y) pairs: (1, 5 ), (2, 10 ), (4, 7 ), and (5, 9 ) equals:
 
  A) 1.25
  B) 2.50
  C) 3.75
  D) 3.69

Question 2

Anita collected a data set on the weights (to the nearest pounds) of all students at her university. The best graph to describe this data is a:
 
  A) histogram
  B) pie chart
  C) bar chart
  D) scatter plot

[Awesome]

Answer to Question 1

A

Answer to Question 2

A