×
Log in to StudySoup
Get Full Access to Elementary Statistics - 12 Edition - Chapter 3.3 - Problem 40bsc
Join StudySoup for FREE
Get Full Access to Elementary Statistics - 12 Edition - Chapter 3.3 - Problem 40bsc

Already have an account? Login here
×
Reset your password

Solution: Finding Standard Deviation from a Frequency

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 40BSC Chapter 3.3

Elementary Statistics | 12th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

4 5 1 322 Reviews
15
3
Problem 40BSC

Finding Standard Deviation from a Frequency Distribution. In Exercises 37–40, find the standard deviation of sample data summarized in a frequency distribution table by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviations to these standard deviations obtained by using Formula 3­4 with the original list of data values: (Exercise 37) 11.1 years; (Exercise 38) 9.0 years; (Exercise 39) 13.4; (Exercise 40) 9.7 years. 

      s = n [ ∑ ( f ⋅ x 2 ) ] − [ ∑ ( f ⋅ x ) ] 2 n ( n − 1 ) Standard deviation for frequency distribution

Step-by-Step Solution:
Step 1 of 2

Solution  40BSC

From the given information, the frequency distribution of years President lived after first inauguration is

Years President

Lived after first

Inauguration

Frequency

0 – 4

8

5 – 9

2

10 – 14

5

15 – 19

7

20 – 24

4

25 – 29

6

30 – 34

0

35 – 39

1

Step 2 of 2

Chapter 3.3, Problem 40BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Solution: Finding Standard Deviation from a Frequency