3rd QUARTER EXAM IN STATISTICS

Complete Name (Last Name, First Name): ___________________

Grade and Section: ____________________

A function that associates a real number to each element in the sample space is called _______.

• continuous

• discrete

• random variable

• constant and variable

The set of all possible outcomes of an experiment is called the_______.

• domain

• function

• range

• sample space

The following random variables are examples of continuous, EXCEPT the_______.

• number of ballpens in the box

• time needed to finish the test

• the weight of newborn babies

• voltage of radio batteries

• 0,2,3

• 1,1,2

• 1,2,3

• 2,3,4

If three coins are tossed, which is NOT a possible value of the random variable for the number of heads?

• 0

• 2

• 3

• 4

Which formula gives the probability distribution shown by the table?

What is another term of average?

• mean

• median

• mode

• range

What do you call the square root of the variance?

• average deviation

• percentile deviation

• standard deviation

• quartile deviation

Which of the following statements is the definition of variance?

• average of random variable

• product of mean and random variable

• subtract the mean from each random variable

• average of the squared differences from the mean