Remedial Test

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

• 1

• 2

• 3

• 4

Which of the following is a discrete random variable?

• Length of electrical wires

• Number of pencils in a box

• Amount of sugar used in a cup of coffee

• Voltage of car batteries

How many ways can a "double" come out when you roll two dice?

• 2

• 4

• 6

• 8

It is a numerical quantity that is assigned to the outcome of an experiment.

• random variable

• variable

• probability distribution

• probability

It is the central or average of its corresponding probability mass function.

• Variance

• Mean

• Probability

• Standard Deviation

These are two values that describe how scattered or spread out the scores are from the mean value of the random variable.

• variance and standard deviation

• mean and probability distribution

• probability and statistics

• mean and variance

It refers to the entire group that is under study or investigation.

• random sampling

• population

• sample

It is a subset taken from a population, either by random or nonrandom sampling techniques.

• random sampling

• population

• sample

What sampling technique in which members of the population are listed and samples are selected in intervals called sample intervals.

• systematic sampling

• lottery sampling

• stratified random sampling

It refers to a part of the sampling technique where each sample point has an equal chance of being selected.

• lottery sampling

• random sampling

• systematic sampling