Which of the following is true? (A) an instrument can be valid without being rel

Question

Which of the following is true?
(A) an instrument can be valid without being reliable
(B) an instrument has to first be valid before it’s reliable
(C) an instrument has to be reliable before it can be valid
(D) reliability & validity of an instrument are not related

Observation would be the most useful way of collecting data if you were carrying out a study on...
(A) the incidence of spouse abuse
(B) aggressive behavior of students in the classroom
(C) attitudes about birth control

When is the best time to determine how quantitative data is to be organized?
(A) after the data has been collected
(B) during the coding of the data

(C) as early in the research process as possible

Explanation / Answer

Question 1

Answer: A

Reliability refers to the consistency of scores when measured again and again while validity of the test is defined when the test appears to measure what it intends to measure. An instrument may appear to be valid but not reliable.

Question 2

Answer: B

Observation method would not be best possible in the other 2 situations.

Question 3

Answer: A

Organizing the data should begin after all the data has been collected.

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