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
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