Using Expressions and Variables in Elementary Classrooms Should Be Evident

question 3

Multiple Choice

Using expressions and variables in elementary classrooms should be evident with all of the following EXCEPT:

• A)Involve situation with a specific unknown.
• B)Express it in symbols.
• C)Use letters in place of an open box.
• D)Use specific data,numbers and equations.

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Definitions:

Parameter

A numeric characteristic that describes and summarizes an entire population of data.

Statistic

A characteristic or measure obtained from a sample of data, used to estimate the value of a population parameter.

Variance

A measure of how spread out a set of data is, calculated as the average of the squared differences from the Mean.

Variance

A statistical measure that tells us how dispersed or spread out the values in a dataset are around the mean.