Author Question: A research report indicates that a study subject scored at the 65th percentile on a math test. How ... (Read 71 times)

erika

  • Hero Member
  • *****
  • Posts: 522
A research report indicates that a study subject scored at the 65th percentile on a math test. How does the reader interpret that report?
 
  1. The subject scored 65 on the exam.
  2. Sixty-five percent of the subjects taking the exam scored higher than this subject.
  3. The subject was the 65th person to take the exam.
  4. Thirty-five percent of subjects taking the exam scored higher than this subject did.

Question 2

What is the range of the following test scores? 65 73 84 84 92 Standard Text: Record your answer, rounding to the nearest whole number.
 
  What will be an ideal response?


tuate

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

4
Rationale 1: Percentage scored on the exam and the percentile ranking on the exam are not the same measure.
Rationale 2: Sixty-fifth percentile means that 65 of those taking the exam scored lower than this subject.
Rationale 3: This is not the meaning of 65th percentile.
Rationale 4: The 65th percentile indicates that 65 of the subjects taking the exam scored lower than this subject and that 35 of those taking the exam scored higher than this subject did.
Global Rationale:

Answer to Question 2

27
Rationale: The range is the difference between the highest score and the lowest score.
Global Rationale:



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

For a complete list of videos, visit our video library