Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

لقطات الشاشة لـ Quick Confidence Interval

iPhone

About Quick Confidence Interval

In statistics, confidence intervals can be used to express the degree to which sample results are reliable.

Confidence intervals are often stated in terms of a percentage like 90% or 95%. When the sample or population distribution is the Normal (bell-shaped) distribution, the confidence intervals can be represented as a number of standard deviations (σ) above or below the sample mean (μ).

Moving the slider beneath the graph will vary the confidence intervals from 50% to 99%. Additionally, you may choose the two-tailed confidence intervals or the one-tailed interval by tapping the button beneath the slider.

In this application, you may chose the standardized Normal distribution with μ=0.0 and σ=1.0 or some other values for mean and standard deviation.

تحديث لأحدث إصدار 2.8

Last updated on 22/11/2023

الإصدارات القديمة

- Compiled with Xcode 15
- Minor GUI change

Version History

2.8

22/11/2023

- Compiled with Xcode 15
- Minor GUI change

2.7

21/10/2020

- Changes necessitated by iOS 13 & 14
- Removed links to Facebook and Twitter
- Some GUI changes

2.6

10/02/2019

- Added audio cues on buttons.
- Compiled with Xcode 10.1.

2.5

01/10/2015

- Changes to accommodate iOS 9, mostly font modifications.

2.4

07/07/2015

- Changed the app icon.

2.3

29/06/2015

- Updated to iOS 8.
- Changed and improved Facebook and Twitter link syntax.
- GUI changes.

2.2

07/01/2015

- Added links to social apps Facebook and Twitter
- The social apps and an account for each must exist for the link to be active
- Update graphing engine
- Changed minimum iOS to 7.1

2.1

05/10/2014

- Updated for iOS 8 and iPhone 6.
- Minor GUI tweaks.
- Updated graphing engine.

2.0

08/10/2013

- Major rewrite and redesign for iOS 7.

1.5

29/07/2013

- Minor GUI enhancements.
- Updated the graphing engine.

1.3

27/11/2012

- Expanded screens to accommodate size of iPhone 5.

- Bug fixes.