Bio+Dec+13,+2011

Bell Ringer: Log onto computers.

Half of the class will be finishing the lab report for heads vs tails (Group 1) The other half of the class will be working on gathering data for a Bromothymol blue pH lab (Group 2)

Group 1 Heads vs Tails Link to the pd 1, 5, & 6 class data [|Heads vs Tails Results:] Copy & paste the data from all three classes (Pd 1, 5, & 6) to fill in the following data table in your lab report. Calculate the mean, median, and mode for the heads data set and then the tails data set (data set is large (approx 45 #s) excel has functions for calculating these); you may use the following table to report your calculations.
 * || Heads || Tails ||
 * Mean ||  ||   ||
 * Median ||  ||   ||
 * Mode ||  ||   ||

Use this data for your lab report- class results: transfer the data to a data table that looks like the following: (this table should be 45+rows long)
 * Student || Average Drops Heads || Average Drops Tails ||

Use the excel spreadsheet to find the mean for heads and tails Graph this data with side of coin on x axis and # drops on y axis

Calculate the mode and median for the data set- you may use an inserted function or sort the data to visually determine this.

Complete the rest of your lab report.

You should identify possible sources of error- think back on how others may have made mistakes (things which may not have been kept constant) as well as mistakes you may have made.

Write a conclusion that:
 * States whether your hypothesis was supported by the data.
 * Compares your results to that of the class (larger data set)

Group 2 Bromothymol blue pH lab You will need one computer per lab group; bring this to the lab station along with your notebooks.