W a Middle Grades Science Teacher Wants to Provide Students

question 19

Multiple Choice

W A middle grades science teacher wants to provide students with practice in the skill of interpreting data. What would be the most suitable activity?

• A) Ask students to construct a graph showing the amount of sugar water put on the grass in the school yard and the number of ants the sugar water attracts.
• B) Ask students to construct a graph showing the pH of water when varying amounts of vinegar are added.
• C) Ask students to measure the width of a simulated river in a tray of sand and the length of time a stream of water ran down the sand in the tray.
• D) Ask students to measure the strength of several magnets in terms of the number of paper clips each magnet attracts and holds.
• E) All of the above
• F) None of the above

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Definitions:

Multiple Regression Model

A predictive method in statistics that uses a range of explanatory variables to estimate the result of a dependent variable.

Independent Variables

Variables in an experiment or statistical model that are manipulated or categorized to determine their effect on dependent variables without being affected by any other variable in the model.

Homoscedasticity

A term in statistics describing a situation where all random variables across a dataset have the same finite variance.

Normality Of Errors

An assumption in many statistical models that the errors in the predictions are normally distributed.