Biology Forums - Study Force

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

Ans. #1

TRUE

Ans. #2

FALSE

Ans. #3

Variable: a characteristic of interest about each individual element of a population or a sample
Data: refer to the value or values of the variable of interest
Illustration: The age of a person when he/she first attends a professional sporting event would be the characteristic of interest about each person and is a variable. Jim was 17 when he first attended a professional sporting event; 17 is the value of the variable for Jim and is data.

Ans. #4

FALSE

Makes more sense now, TY