The following distribution represents the scores of students in the Statistics exam. Find the approximate score corresponding to the a) 75th percentile, and b) 90th percentile (10 points). Exam Score Frequency 30-39 40-49 50-59 5 60-69 4 70-79 80-89 90-99
Added by Mary W.
Step 1
5 + \left(\frac{3 \times 37}{4} - 25 \times \frac{10}{10}\right)\) \(p_{75} = 79.5 + \left(27.75 - 25\right)\) \(p_{75} = 79.5 + 2.75\) Show more…
Show all steps
Close
Your feedback will help us improve your experience
Sri K and 81 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Ahmet Y.
For the following grouped frequency distribution table of exam scores, what is the lowest score on the exam? 90-99 80-89 70-79 60-69 50-59 A. X = 50 B. X = 59 C. X = 60 D. Cannot be determined
David N.
The test scores of 40 students are summarized in the frequency distribution below. Find the standard deviation. (to 2 decimal places) Score 50-59 60-69 70-79 80-89 90-99 Students
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD