LEVELS of DATA.

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Presentation transcript:

LEVELS of DATA

RELATIONSHIP OF DATA TO GRAPHS AND STATISTICS Statistics Level of Data Characteristics of Data Graphs *continuous = measure, decimals (weight = 9.3 Kg) Descriptive Inferential *discrete = count, whole numbers (students = 24) quantitative* (numerical) intrinsic order (1, 2, 3 etc.) equal interval values absolute or true 0 Ratio (ºKelvin temperature) Histogram Timeplot Line Graph Scatter Plot 1-Sample T-TEST Paired 2-Samples T-TEST Independent 2-Samples T-TEST 2-Sample Regression 3+ Samples ANOVA statistical analysis possibilities increase Interval (ºCelsius temperature) mean, median, mode, standard deviation (cold, room temperature, hot) qualitative (categorical) (≈numerical scale) Ordinal Bar Graph 1 Sample Proportion 2 Sample Proportions Chi Square Pie Graph Frequency Proportions Nominal (Yes, No)

Levels of Data qualitative quantitative ordinal ratio What is the conclusion of this experiment? What is the control of this experiment? What is the independent variable of this experiment? What are three controlled variables (constants) of this experiment? What is the dependent variable of this experiment? What levels of data were observed? What types of graphs are used for these levels of data? pie graph bar graph histogram Angle of deflection increases as the mass increases 20° angle ramp, 4 magnets, level table top no mass or normal mass (≈ no magnetism / glass marble) line graph scatter plot What types of inferential statistics are used for this level of data? chi square t-test regression

Levels of Data quantitative quantitative ratio ratio What is the conclusion of this experiment? What is the control of this experiment? What is the independent variable of this experiment? What are three controlled variables (constants) of this experiment? What is the dependent variable of this experiment? What levels of data were observed? What types of graphs are used for these levels of data? pie graph bar graph histogram Angle of deflection increases as the mass increases 20° angle ramp, 4 magnets, level table top no mass or normal mass (≈ no magnetism / glass marble) line graph scatter plot What types of inferential statistics are used for this level of data? chi square t-test regression