Question

1- A bimodal distribution is one that has two

a. modes.

b. medians.

c. percentiles.

d. frequencies.

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2- The number of children per family is an example of a ______ variable.

a. continuous

b. selective

c. discrete

d. dichotomous

Answer 1

1. Bi means two, modal refers to Mode or Peak. Therefore, Bimodal distribution is the one , which has two peaks or Modes. It provides important information about the nature of the investigated variable. It could represent two groups of people or classes, that have different characteristics . It could also imply that data is sinusoidal

The right option is a. Modes

2. The number of children per family always assumes a finite number . It is a variable whose value is obtained by counting & has only a certain value , not a range of values.

Therefore, number of children per family is a discrete variable & the right option is c. Discrete.

Hope I clarified your query.