Biol 180 : Data and Statistics QUIZ TEST GRADED & VERIFIED 2023

What is the difference between a categorical and continuous variable? correct answers Categorical are assigned to discrete categories; continuous can take any value in a range. What is the difference between an explanatory (or independent) variable and a response (or dependent) variable? correct answers Explanatory is the factor that varies in an experiment; response is measured as the explanatory variable varies. In describing a dataset, what does the mean represent? correct answers (Usually) The arithmetic average. In describing a dataset, what does the standard deviation or standard error represent? correct answers A measure of the variation around the estimate of the mean. What is a bar plot, and what do the vertical lines on a bar plot represent? correct answers The height of a bar represents a mean; the vertical line usually represents the standard error. What is a scatterplot? correct answers A graph where both the explanatory and response variables are continuous.