Question
on (cana Quiz Me: 3.3-6 Find the standard deviation of a sam This Question: 1 pt 1 of 2 This Quiz: 2 pts possible -Question Help Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using th f represents the class frequency, an obtained from the original list of data values, 11.1. e formula below, where x represents the class mid d n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation point s= n(n 20-26 2 Interval 27-3334-40 48-54 13 55-61 31 62-68 41-47 Frequency 2 29 Standard deviation = (Round to one decimal place as needed.) Consider a difference o 20% between two values of a standard dev ation to be significant How does this computed value compare with the given standard deviation, A. The computed value is significantly less than the given value B. The computed value is not significantly different from the given value. O C. The computed value is significantly greater than the given value. Click to select your answer(s). Save for Later
Explanation / Answer
The statistical software output for this problem is:
Approximate summary statistics:
Using counts in Frequency
Hence,
Standard deviation = 9.9
Since the difference is not greater than 20%, the computed value is not significantly different from th given value. Option B is correct.
Column Std. dev. Midpoint 9.9262866
