Find whether the population of sampled trees has statistically significant differences between sunand shade leaves. Use WHOLE CLASS DATA to answer in this part of the exercise.

1) Calculate the standard deviation (by Excel or by hand) for the number of stomata in a field of view for sun and shade leaves. Use the Average from each of the groups (you will have 5values)–WHY NOT USE15 values?–hint think about pseudoreplication)

2)Use the empirical rule to test for a difference between the shade and sun leaves using the whole class data.

3)Use t-test to test for a difference between the sun and shade leaves for the class data–Again, use the average numbers (5values).

Describe and justify your conclusions based on the data

–Are there significant differences between the sun and shade leaves–

a) in your own tree? 

b) in the population of trees sample

 

 

Name Last e Atto De La Cruz 8 Gordillo Husameddin 0 1 2 Martinez 3 McElman 4 Jiminez 5 6 5 6 7 Olfelt 8 Robles 9 Roman 0 1 2 Vazquez 3 Olfelt Name first Tania JPO 1 JPO2 Mario Sara Genghis Jack Amanda Millenia Teresa Rene Vanessa Joel JPO tree 1 1 1 Average 2 2 2 Average 3 3 3 Average 4 4 4 Average 5 sun a 65 62 64 57 57 57 57 sun b 50 49 45 48 46.33333 28 31 30 61 63 63 5 5 Average 29.6666667 47 45 47 46 48 47 47 39.33333 72 73 68 71 38 41 39 24 24 25 24.3333 sun c 54 56 57 36 34 34 34.66667 52 59 57 56 43 45 45 44.33333 shade a 27 29 29 20 20 30 32 32 31.33 shade b 20 20 23.33333 23 25 24 24 21.6667 22 21 22 32 31 31 24 22 24 31 32 33 32 35.66667 29 32 33 31.33 36 35 36 27 30 28 28.3333 shade c 36 38 39 55 51 53 53 44 47 45 45.33 15 15 22 15 15 21 21 21 21