statistics and probability 1

It is defined as a variable whose value is determined by chance

• probability

• dependent

• independent

• random variable

It is a random variable that can be counted.

•  dependent

• independent

•  discrete

• continuous

It is a random variable that can be measured

•  dependent

• independent

•  discrete

• continuous

Which of the following is a discrete random variable?

• Number of bus in a terminal

• temperature in t’bolok

•  Average weight of babies

• speed of an athlete

If two coins are tossed once, which is not a possible value of a random variable?

• 0

• 1

• 2

• 3

. If three coins are tossed once, how many possible outcomes are there?

• 5

• 6

• 7

• 8

Suppose a single die is rolled, what is the probability of getting 3

• 1/2

• 1/3

• 1/4

• 1/6

. It is the measurement or quantity that describes the sample.

• probability             

• parameter

• statistic

• curve

. It is the measurement or quantity that describes the population

• probability             

• parameter

•  statistic

• curve      

Which of the following does not belong to the group?

• population mean    

• µ           

• population standard deviation        

• sample variance