# Resource Library

#### Statistical Topic

Advanced Search | Displaying 391 - 400 of 532
• ### Dataset Example: DIG Stats: Acid Rain Activity

In this activity, students will perform a one sample t-test to see if the pH level of rain collected by the EPA is less than the pH standard for acid rain (5.6). Questions about the exercise and links to a t-test applet and TI-83 instructions are given. The data exist in Excel, TI-83, and text formats.
• ### Dataset Example: DIG Stats: Airport Activity

In this activity, students will calculate the correlation and generate a scatterplot of the number of passengers flying and the number of performed departures from 135 airports in the US. Questions about the exercise and links to Excel and TI-83 instructions are given. The data exist in Excel, TI-83, and text formats.
• ### DIG Stats: Excel Guide for Performing an ANOVA

This tutorial explains in detail how to perform an ANOVA in Excel.
• ### DIG Stats: Excel Guide for Making a 3-D Graph

This tutorial explains in detail how to make a 3-D graph using the Chart Wizard in Excel.
• ### DIG Stats: TI-83 Guide for Importing Data and Programs

This tutorial explains in detail how to import data and programs on the TI-83 graphing calculator using TI-83 Graphlink software.
• ### DIG Stats: TI-83 Guide for Determining the Confidence Interval

This tutorial explains in detail how to find a confidence interval using the TI-83 graphing calculator.
• ### DIG Stats: Excel Guide for Determining the Confidence Interval

This tutorial explains in detail how to find a confidence interval using Excel.
• ### DIG Stats: Excel Guide for Making a Scatterplot

This tutorial explains in detail how to make a scatterplot in Excel.
• ### Video: Against All Odds: 27. Comparing Two Means

This is a free online video program. "How to recognize a two-sample problem and how to distinguish such problems from one- and paired-sample situations are the subject of this program. A confidence interval is given for the difference between two means, using the two-sample t statistic with conservative degrees of freedom."
• ### DAU StatRefresher: Linear Regression

This interactive tutorial on Linear Regression helps the user understand the definition of linear regression, understand the meaning of correlation, use scatter plots, recognize and calculate errors in linear regression, use simple linear regression analysis, use residual analysis of the regression equation, understand the significance of the correlation coefficient and the regression coefficient in linear regression, and solve exercise problems using linear regression.