REVIEW QUIZ

Which refers to numerical outcomes of a random experiment, usually represented by X or Y and can either be discrete or continous?

• Random Experiment

• Continous Variable

• Discrete Variable

• Random Variable

Complete the statement, respectively.

"A variable whose value can be obtained by counting is ​ _____ while the variable obtained by measuring is ​ _____."

• discrete, continous

• continous, discrete

• countable, measurable

• measurable, countable

The number of activities in the student's Portfolio is an example of CONTINOUS VARIABLE. Is it True or False? Why?

Which of the following are considered properties of a random variable?

• The sum of the probabilities of a random variable is equal to 1.

• A random variable can be discrete or continuous.

• A random variable can be negative.

• A random variable represents numerical outcomes for different situations or events.

If you tossed three coins at once, then there will be ___ total outcomes.

The word SAMPLE SPACE refers to ___.

• all experiment

• all outcomes

• all trials

• all probability

What are the process included in calculating the mean of the discrete random variable X?

• Get the square root of the product.

• Get the summation of the product.

• Multiply each x value by its probability.

• Identify the correct probabilities for each x value.

Do you agree on the statement,

"If the variance or standard deviation is high/large, then its values of random variable is far from the mean."?

• YES

• NO

What parameter is also equal to the square root of variance?

Z-Score is also called as _____.

• standard normal probability

• standard normal distribution

• standard normal score

• standard normal curve