BIOSC 140 Laboratory Worksheet –
Sample Calculations for Mean, Standard Deviation and Conversions Laboratory 1. Sample Standard Deviation Question 1. Ten students decided to have a free throw contest so they each took 100 shots at the basket and the following numbers represent the number of shots each student made: 44, 50, 38, 96, 42, 47, 40, 39, 46, 50 Calculate the mean and standard deviation for this set of data. Laboratory 1. Sample Conversion Question 2. A group of students were cleaning the lab and they found a box that was imported from Europe. They wanted to put it on a shelf that was 12 inches deep and 24 inches wide. The shelf had a label that said it could support a maximum of 25 pounds. They did not have any measuring devices with them, but the box stated that it was 26 cm by 64 cm with a weight of 14.8 kg. Convert the weight, length and depth and evaluate the size of the box to see if you can safely put it on the shelf. Laboratory 1. Sample Metric Conversion Questions 3A. The laboratory manual states we need to add 0.05 ml of a standard to a solution, but we only have a micropipette. How many microliters do we add? 3B. We have 720 milliliters of water. What is the weight of that water in grams? 3C. In Laboratory 15/16, one student measured their near point for accommodation of their vision at 328 millimeters. However, the comparison table in the supplement for evaluating their near point lists the data in centimeters. How many centimeters is 328 millimeters? 3D. Complete the following table by making each row equal in value. microliter milliliter centiliter liter kiloliter 1.0 420 328 0.18 8.7
