Mechteld is primarily interested in strategies that increase students' interest and achievement in mathematics. She begins with interviews of students. Based on those qualitative findings, she then develops an interest questionnaire. Mechteld's sampling for the questionnaire should involve
A) purposive sampling from a new set of participants from the same population.
B) all participants from the qualitative phase.
C) random sampling from a new set of participants from the same population.
D) purposive sampling of participants from the qualitative phase.

Question

Quizplus · Accepted Answer

Purposive sampling of participants from the qualitative phase would be the best choice because Mechteld has already conducted interviews with students in the qualitative phase and used their responses to develop the interest questionnaire. By selecting participants who were part of that initial phase, Mechteld can ensure that the questionnaire is tailored specifically to the population she is interested in studying. Random sampling or sampling all participants from the qualitative phase may not provide the same depth of insight into the factors that influence students' interest and achievement in math as the participants might not all have the same level of interest in math.

Mechteld Is Primarily Interested in Strategies That Increase Students' Interest