Does not design and carry out investigations or experiments with two variables. Appropriate methods for collecting, recording, and organizing, and representing data is neat, clear and pleasing to the eye. Description of affects of change in representation is explicit and easily understood. Method is inappropriate for collecting, recording, and organizing and representing data. Did not describe how change in representation affects likely change in information.
Students interpret data using methods of exploratory data analysis.
Compute, identify and interpret measures of center and spread. Mathematically correct, identification and interpretation complete. Measures of central tendencies computed and interpreted. No attempt made to interpret measures of central tendencies. Look for patterns in data and understand their use in interpretation of the data.