Biology Forums - Study Force

When a pair of variables has a positive correlation, the slope in the regression equation will always be positive.
 
  Indicate whether the statement is true or false

Q. 2

Two common unweighted indexes are the Paasche Index and the Laspeyres Index.
 
  Indicate whether the statement is true or false

Q. 3

A cell phone company wants to determine if the use of text messaging is independent of age. The following data has been collected from a random sample of customers.
 
  Regularly use text messaging Do not regularly use text messaging
  Under 21 82 38
  21-39 57 34
  40 and over 6 8
 
  Using this data, if we wish to test whether the preferred news source is independent of age using a 0.05 level of significance, the critical value is 5.9915.
   Indicate whether the statement is true or false

Q. 4

When the correlation coefficient for the two variables was -0.23, it implies that the two variables are not correlated because the correlation coefficient cannot be negative.
 
  Indicate whether the statement is true or false

Ans. #1

TRUE

Ans. #2

FALSE

Ans. #3

TRUE

Ans. #4

FALSE

All are answered correctly

Happy to help