A program in mathematics is to be set up to improve math performance on an inter

Question

A program in mathematics is to be set up to improve math performance on an international test. The students are to be divided into groups: one is to receive instruction using the new program and the other to receive the exisiting prgram. Which of the following methods could be used to assign children to one of the two groups?

I. Put all the names in a box and draw out half the names and assign them to the new program and assign the names left in the box to the existing program.

II. Put the students who arrive to class first into the new program and assign the remaining students to the existing program.

III. Let the students choose which program they wish to be in

a. I only

b. I and II only

c. II only

d. I, II and III only

Explanation / Answer

A convenience sample is one of the main types of non-probability sampling methods. A convenience sample is made up of people who are easy to reach.

For Case I and II they are convenience sampling.

Now a convenience sample is a matter of taking what you can get. It is an accidentalsample. Although selection may be unguided, it probably is not random, using the correct definition of everyone in the population having an equal chance of being selected. Hence they won't give unbiased estimates for population.

So we will use only I i.e. I. Put all the names in a box and draw out half the names and assign them to the new program and assign the names left in the box to the existing program.

So answer is A. I only.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.