Part%209%20Research%20Strategies%20and%20Validity0

# 9 08 07 06 2 t s e t 05 04 03 02 01 0 0 02 04 06 08 1

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: e height of the bar drawn above each ‘thing’ being counted x axis shows the categories that are being counted Bar graph: x axis is Nominal or Bar graph: x axis is Nominal or Ordinal scale June 28th 2004, Ottawa Centre 30000 Number of votes 25000 20000 15000 10000 5000 0 NDP LIB CON GRN MP IND Political party COM CAP ML Histogram: x axis is Interval or Histogram: x axis is Interval or Ratio scale Histogram of IQ levels Number of individuals 30 25 20 15 10 5 0 60 70 80 90 100 IQ score 110 120 130 140 Scatterplots show the relationship Scatterplots show the relationship (correlation) between variables 1 0.9 0.8 0.7 0.6 2 t s e T 0.5 0.4 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1 Test 1 • Variables on both the x and y axes are interval or ratio scales • Each point represents a participant in the study Basic Statistics Basic Statistics • Descriptive statistics – Used to describe data • Provide an accurate summary of the important aspects of your data • using as few numbers as possible Choice of statistic is determined by what you consider to be important • Inferential statistics – Used to make inferences or generalizations from data • You have only made observations on a small sample • How confident are you in generalizing your conclusions...
View Full Document

Ask a homework question - tutors are online