biolabreview - INTRODUCTION TO THE LABORATORY PROCEDURES...

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INTRODUCTION TO THE LABORATORY  PROCEDURES FOR OBTAINING AND PRESENTING DATA Exercises for Lab 1 A control is the same as the experimental group in all aspects except the variable being tested. This factor, called the “independent variable,” is varied in the experimental group and held  constant in the control group. The factor in the experimental group, which varies in response to alterations in the independent  variable, is called the “dependent variable.” OBJECTIVES: A. To learn how to make measurements, in metric units, using appropriate laboratory  equipment. B. To learn how to organize data and present it in tabular and graphic forms.  Can you explain any differences between the salt solution’s expected total mass and the salt  solution’s actual mass?  How accurate was your determination of the volume of water in the cylinder when you viewed  the meniscus at eye level compared to the volume determined by its mass?
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