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BIO 203 LAB PRACTICAL 2 PRACTICAL REVIEW SHEET DETAILED QUESTIONS AND ACCURATE ANSWERS

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BIO 203 LAB PRACTICAL 2 PRACTICAL REVIEW SHEET DETAILED QUESTIONS AND ACCURATE ANSWERS

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BIO 203 LAB PRACTICAL 2 PRACTICAL
REVIEW SHEET DETAILED QUESTIONS AND
ACCURATE ANSWERS

●● Explanatory variable
Answer: the variable that affects the response (X axis)


●● Scatterplot
Answer: graph showing relationship between two variables


●● Continuous variable
Answer: can take any value in a range


●● Discrete variable
Answer: can only take specific values


●● Regression
Answer: method to find the best fit line


●● Line of best fit
Answer: line that best represents data

, ●● Slope
Answer: change in Y when X changes


●● Y-intercept
Answer: where the line crosses Y axis


●● R-squared
Answer: how well data fits a line (0 to 1)


●● Adjusted R-squared
Answer: corrected measure of fit


●● P-value
Answer: probability results are due to chance


●● Null hypothesis
Answer: no relationship between variables


●● Alternative hypothesis
Answer: there is a relationship

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