Standard Deviation Calculator vs EAN13 BarcodeScan

Use this app to calculate the standard deviation of a set of values. It will also return the: -mean(average) -variance -population deviation -Median -Q1 & Q3 To add a value to the set press "+Row". When all data are in press "Calculate". Note: Population deviation (n-1) is unbiased, while normal standard deviation (n) is biased. To calulate the z-score enter a number into the z-score tab, then click find z-score. The z-score will be based off the main table.

EAN13 BarcodeScan is more than just a scanner—it's a powerful inventory and tracking tool designed for both personal and professional use. Instantly scan any EAN-13 barcode, identify the GS1 member organization that issued the barcode prefix, and maintain a detailed, searchable history with custom notes and visual thumbnails. KEY FEATURES: * INSTANT PREFIX IDENTIFICATION: Automatically identify the GS1 prefix region associated with every scanned barcode and learn where the barcode was registered. * VISUAL HISTORY LOG: Unlike other scanners, we save a thumbnail image of the scanned area, helping you visually confirm products in your history. * LOCAL SQLITE DATABASE: Your data stays on your device. We use a robust local SQLite database for maximum speed, reliability, and privacy. * SMART SEARCH: Quickly find any scan using our advanced search feature. Filter by barcode number, country, or your own custom notes. * CUSTOM NOTES: Add detailed descriptions, prices, or locations to any scan to keep your records organized. * ACCESSIBILITY & FEEDBACK: Enable Voice Feedback to have the app announce countries out loud, and use Scan Beep for instant confirmation. PROFESSIONAL FEATURES (PRO UPGRADE): Unlock the full power of your data with our Professional License, designed for corporate and high-volume use: * EXPORT TO CSV (EXCEL): Convert your entire history into a CSV file for easy analysis in Excel, Numbers, or Google Sheets. * DATABASE EXPORT: Export the raw .sqlite file for integration with other professional software or custom workflows. * COMMERCIAL LICENSE: Legal peace of mind for business and commercial environments. * ONE-TIME PURCHASE: No subscriptions. Unlock all professional features forever with a single upgrade. PRIVACY FIRST: No cloud accounts required. No data tracking. All your scans, images, and notes are stored securely on your device’s local storage. Perfect for: - Inventory management - Retail price checking - Logistics and warehouse tracking - Product sourcing and origin verification Download EAN13 BarcodeScan today and turn your device into a professional-grade barcode logging system! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/