1. Statistical Analysis – Part 3
10/14/2018
Statistical Analysis – Part 3
Yale Braunstein
School of Information
Statistical Analysis - 3

2. Histograms in Excel
Since this is not obvious from the menus or help, the following may be of use
Install the Analysis Tool Pack Add-in (Tools/Add-ins/Analysis ToolPack)
This depends on which options you originally installed with Excel
Then use Tools/Data Analysis/Histogram
You can only get help on histograms from the Histogram pop-up window
See the Oakland sample file for an illustration of the use of ”bins” & chart output

3. General Concerns Reliability
Repeated measures of the same condition are reasonably similar
Validity
Statistic measures what it purports to measure
(worries about systematic error & bias)

4. Specific SPSS Topics Covered
Descriptive statistics
Frequencies
Histograms
Cross-tabulations
Value labels
Recoding & transforming data
Missing data or observations
Other stuff: Scatterplots

5. Scatterplots in SPSS
Scatterplots can be useful to present two numerical variables (non-categorical) and show the possible relationship between them.
Commands
Graphs / Scatter / Simple
To add regression line, go to output window, double-click on graph, use Chart / Options / Fit Line