3. Hypothesis Testing - 2L PP

3. Hypothesis Testing - 2L PP - Lets see that again More...

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Let’s see that again… More details about graphing, tables and statistics
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Table vs. Graph Graphs show trends 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Collpas Forest Proportion of bats Reproductive Non-reproductive Bat species Number of individuals captured Number of female bats captured Number of male bats captured Lophostoma silvicolum 21 10 11 Platyrrhinus helleri 22 7 15 Carollia perspicillata 15 3 12 Artibeus obscurus 20 10 10 Figure 1: Proportion of female reproductive and non-reproductive bats in two different types of habitat (collpas and forest) Table 1. Number of total bats, female bats, and male bats captured in 2006 Tables show exact values
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Making graphs 1. Choose the type of graph that best represents the data Frequency distributions showing the frequency of observations falling into a series of numerical categories plotted on the x-axis Histogram Graph Scatter Plot 0 2 4 6 8 10 12 14 16 <1.5 1.5 - 1.75 1.75 - 2 > 2 Number’of’individuals’ Size’classes’-’Height’(m)’ Every individual data point is plotted directly on the graph Best-fit line shows correlation or strength of association between two variables
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Making graphs 1. Choose the type of graph that best represents the data Line graph Bar graph When the one variable (“dependent”) represents a continuous function of the other (“independent”) variable e.g. Daily increase in leaf length between two different types of grasses 0 5 10 15 20 25 30 1 2 3 4 Leaf’lenght’(mm)’ Collec=on’number’(day)’ Monkeygrass Turf 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Collpas Forest Proportion of bats Reproductive Non-reproductive When the independent variable presents qualitative categories e.g. Proportion of reproductive and non-reproductive bats visiting two different types of habitat
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Graph Details 2. Put information on appropriate axis x = Independent variable ( what you manipulated ) y = Dependent variable ( what you measured ) 3.
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3. Hypothesis Testing - 2L PP - Lets see that again More...

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