2. You are developing an instrument that measures vocational preferences (what p

Question

2. You are developing an instrument that measures vocational preferences (what people want to do for a iving) and you need to administer the test several times during the year to students who are attending a vocational program. You need to assess the test-retest reliability of the test and the data from two administrations are provided below (the fall scores are on the left and the spring scores are on the right). Would you call this a reliable test? (Hint: Do not rely on your intuition; do the work!) Why or why not? 21 7 38 13 15 35 34 45 5 19 32 47 24 34 17 12 32 41 15 20 21 39 8 46 3 30 16 26 34 43 50 20 14 22 14 25 3 50 4 17 42 32 28 46 40 10 40 48 12 11 5 23

Explanation / Answer

Nothing in this whole world is 100% accurate, so we cannot say that the test would be reliable. but, according to the data, I would say that there is a probability that the instrument is reliable so, the answer is 'YES', though everyone can have a different perspective of looking at things.
According to the data, spring scores are more than the fall scores which means that people in spring took more tests compared to fall hence, the test-retest capability of the instrument is better. It can take more and more tests providing the correct measure for which it is designed.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

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