BIOL 1406: LAB EXERCISE 1

Objectives

How do scientists collect and analyze data?

After completing this exercise, you should be able to:

•  identify the names and functions of the laboratory items on display in the lab

• explain what a random variable is, and distinguish between discrete and continuous random variables

•  use SI units when making measurements in lab

•  convert between different SI units

•  use the correct number of significant digits when reporting a measurement

•  identify the number of significant digits in a reported measurement

• choose an appropriate measuring device when measuring distance, weight, or volume; and use it correctly

•  use the correct number of significant digits when reporting computed values

• display data in a well-organized and clearly labeled data table

•  use a calculator to calculate the mean, percent error of the mean, and standard deviation of a list of measurements; and explain what these statistics tell us

•  use the appropriate statistics to compare the precision and accuracy of different measuring devices

•  explain what the Student’s t-test is used for, and how to interpret the results

•  use a spreadsheet program such as Excel to calculate the mean, percent error of the mean, and standard deviation of list of measurements

•  use a spreadsheet program such as Excel to carry out the Student’s t-test