Using data with confidence
Welcome to Using data with confidence, a suite of resources that will assist you to read, understand and interpret data.
For information about the face-to-face course for NSW public school staff, visit the CESE website.
To get the most out of this online resource, download:
This resource is also available as printable manual (PDF, 2.3MB)
TEC is a multipurpose calculator comprising of 7 tabs – TEC 1 to TEC 6 and Boxplots. Simply enter all the marks from tests or assessments into the TEC tabs and they will automatically calculate:
- number of values / sum of values
- the mean, median and modes
- minimum and maximum
- standard deviation
- confidence interval amount and scale
- quartiles and interquartile range
The Boxplot tab displays all boxplots, enabling you to compare up to six sets of marks.
The Excel Workbook contains 9 tabs. Each tab corresponds with units in this online resource, and is where you enter Excel formulas.