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Unformatted text preview: Use this table to calculate the chisquared value and probability for Experiment I: tossing a coin. Trial (group) E A B C D E F G H I J K L M N O P Q R Mean sd #DIV/0! #DIV/0! #DIV/0! #DIV/0! overall chi2value overall pvalue Observed Observed Heads Tails Expected Expected Chisq. value pvalue Heads Tails (oe)2/e #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 Err:502 1) Fill in the "expected" number of heads out of your 30 to (ignore the changes in values 2) Toss your coin 30 times, and put the numbers of heads 3a) Copy all of the class results from the board into this ta 3b) Watch what happens to the chi2value and pvalue as What is the significance of this Why do you think we do not also need to calculate the prob This is the probability that your null hypothesis [no difference] is correct (~1 = highly probable; ~0 = very unli ber of heads out of your 30 tosses (ignore the changes in values for p and chi2). and put the numbers of heads and tails on the board. ults from the board into this table the chi2value and pvalue as you input more trials. What is the significance of this? (Ask your TA.) also need to calculate the probability for "tails"? highly probable; ~0 = very unlikely) 1. Combine data from three groups of students 2. Use these tables to calculate the ttest probability Variable One Dark vs. ambient Trial (group) 1 2 3 4 5 6 Weight (g) 13.02 5.34 11.61 5.85 15.2 13.6 0 0 0 0 0 0 Mean sd Control Slope Oxygen use 0.01 0.01 0.01 0.02 0.01 0 0.01 0 Experimental Slope Oxygen 0 0 0 0 0 0 Mean sd 0.13 use 0.01 0.01 0.01 0.02 0.01 0 0.01 0.01 Variable Two Bright light vs. ambient Trial (group) 1 2 3 4 5 6 Weight (g) 6.59 6.75 11.24 9.79 7.06 5.64 0 0 0 0 0 0 Mean sd Control Slope Oxygen use 0.01 0 0.01 0.01 0 0.01 0.01 0 Experimental Slope Oxygen 0 0 0 0 0 0 Mean sd 0.66 use 0 0.01 0.01 0.01 0.01 0 0.01 0 Ttest p value = Ttest p value = ...
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This note was uploaded on 04/26/2009 for the course LIFESCI 2 taught by Professor Pires during the Winter '08 term at UCLA.
 Winter '08
 Pires

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