Estimate the Sum by Rounding to the Nearest Whole Number

question 139

Multiple Choice

Estimate the sum by rounding to the nearest whole number: 2.78 + 8.48

• A)10
• B)12
• C)11
• D)9

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Definitions:

Error Variance

Pertains to the variation within experimental data that cannot be attributed to the variables being studied, essentially representing noise in the data.

Quasi-Experimental Designs

Research designs that seek to establish causal relationships between variables but lack the full control or random assignment typical of true experiments.

Selection Criteria

The specific guidelines or requirements used to determine which individuals or cases are included or excluded from a study or analysis.

Initial Groupings

The preliminary categorization or division of subjects, items, or variables based on specific criteria at the start of a study or analysis.