ci_onesample_std(A, cl)

Computes a confidence interval for the standard deviation of sample A using the confidence level cl. Assumes the population is normal.

See also ci_onesample_pro ci_onesample_z ci_onesample_t 

Example

(See NOTE below)

x=(10.05, 10.07, 9.95, 10, 10.03, 9.99, 10.02, 9.98, 10, 9.97, 10.1, 10.08 )

( 10.05 10.07 9.95 10 10.03 9.99 10.02 9.98 10 9.97 10.1 10.08 )

ci_onesample_std(x,.95)

Chi-Square Test for One Population Standard Deviations

Confidence interval for the standard deviation.

Confidence level : 0.95 (95%)

Results:

Interval  : (0.033226677993554624, 0.07963753812418865 )

NOTE: The data used in this example was taken from the textbook Introductory Statistics 6th Ed. by Neil A. Weiss with kind permission of Addison Wesly Longman, Inc. (AWL). AWL does not endorse nor it supports the Calcugator.