Question

80, 82, 84, 99, 94, 95, 77, 77, 75, 67, 66, 64, 93, 98, 97, 71, 72, 70, 76, 75, 78, 86, 88, 83, 79, 77, 74, 71, 74, 75. a. Complete the frequency distribution below. Classes Midpoint Frequency Relative f 61-70 71-80 81-90 91-100 b. Sketch a Frequency Polygon using the data above. c. Find the mean of the frequency distribution d. Find the standard deviation of the frequency distribution above.

Name: 80 82 84 99 94 95 77 77 75 67 66 64 93 98 97 71 72 70 76 75 78 86 88 83 79 77 74 71 74 75 a complete the frequency distribution below classes midpoint frequency relative f 61 70 71 80 81 90 20051
Uploaded: 2023-06-29T06:29:13-08:00
Duration: 4 min 57 s
Channel: Madhur L
Description: 80 82 84 99 94 95 77 77 75 67 66 64 93 98 97 71 72 70 76 75 78 86 88 83 79 77 74 71 74 75 a complete the frequency distribution below classes midpoint frequency relative f 61 70 71 80 81 90 20051

          80, 82, 84, 99, 94, 95, 77, 77, 75, 67, 66, 64, 93, 98,
97,
71, 72, 70, 76, 75, 78, 86, 88, 83, 79, 77, 74, 71, 74, 75.
a.   Complete the frequency distribution below. 
Classes
Midpoint
Frequency
Relative f
61-70
71-80
81-90
91-100
b.   Sketch a Frequency Polygon using the data
above. 
c.   Find the mean of the frequency
distribution 
d.   Find the standard deviation of the
frequency distribution above.

Added by Shannon D.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Madhur L

06/29/2023

Step 1

For the class 61-70, there are 6 numbers: 67, 66, 64, 70, 71, 74. Midpoint: (61+70)/2 = 65.5 Frequency: 6 Relative frequency: 6/25 = 0.24 For the class 71-80, there are 11 numbers: 80, 77, 77, 75, 71, 72, 76, 75, 78, 79, 77. Midpoint: (71+80)/2 = 75.5 Frequency: Show more…

Show all steps

Thanks for your feedback!

80, 82, 84, 99, 94, 95, 77, 77, 75, 67, 66, 64, 93, 98, 97, 71, 72, 70, 76, 75, 78, 86, 88, 83, 79, 77, 74, 71, 74, 75. a. Complete the frequency distribution below. Classes Midpoint Frequency Relative f 61-70 71-80 81-90 91-100 b. Sketch a Frequency Polygon using the data above. c. Find the mean of the frequency distribution d. Find the standard deviation of the frequency distribution above.