The precision with which a sample average approximates a population average increases as:
Correct answer: D. the standard deviation of the sample decreases
- A. the range of the sample increases
- B. the standard deviation of the sample increases
- C. the man of the sample increases
- D. the standard deviation of the sample decreases
Explanation
A sample mean estimates the population mean more precisely when scores vary less, because a smaller standard deviation reduces sampling error. In practice, a larger sample also improves precision, but that option is not provided.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Research Methods and Statistics
263 free Research Methods and Statistics MCQs from Psychology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Psychology questions like this
Psychology is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Research Methods and Statistics questions
In order to determine whether the strength of people's self-esteem related to their income levels, researchers would most likely make use of:
In an effort to prevent participants in an experiment from trying to confirm the researchers' predictions, psychologists sometimes:
In order to understand the unusual behavior of an adult client, a clinical psychologist has carefully investigated the client's current life situation and his physical, social-cultural, educational history which research method has the psychologist employed?
In the control condition of an experiment the:
Researchers use experiments rather than other research method in order to distinguish between:
Which measure of central tendency is used to calculate your grade-point average?