uestion 3 You have been provided with data on the percentage cover and average h

Question

uestion 3 You have been provided with data on the percentage cover and average he testudinum Turtle grass) along a 50m transect running from the shoreline out to sea at Crandon Park beach. Sampling was conducted using the line transect sampling technique Based on observations at Crandon Park we could put forth the following questions: i) Does the percentage cover of Thalassia testudinum (Turtle grass) change with distance from the shore? Yes, the percentage cover of Turtle grass change with distance from the shore Does the average height of Thalassia testudinum (Turtle grass) change with distance from iü) the shore? No, the average height of Turtle grass doesn't change with distance from the shore 17.What are the variables in the example above? (2 pts) The variables in the example are the percentage cover, the average height of Thalassia testudinum, and the distance alone transect running. Prtsc 2 W E R T Y U Alt Ctri

Explanation / Answer

22. There are many factors that contribute to the turtle grass height are salinity, water depth, turbidity, temperature. Just to know if there is potential relationship between the distance from shore and turtle grass height, then it can be further analyzed which of the factors contribute most towards the change in height of tutle grass using multiple linear regression.

23. The first scatterplot shows points move from lower left to upper right corner, which indicates a positive relationship between the variables. The points are found to lie in and around the trendline, which indicates that relationship is linear. From the regression line, one can see that for each unit increase in distance along transect, there is 57.36% change in percentage cover of turtle grass. Equivalently, for 0 unit change in distance along transect, one expects 0.6655% change in percentage cover. The value of R^2 is 0.5403, which implies that around 54% variability in change in percentage cover of turtle grass is accounted for distance along transect.

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