Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Investigating Seed Germination. Results Table of Results TEMP. (?c) PERCENTAGE GERMINATED GROUP 1 GROUP 2 GROUP 3 GROUP 4 GROUP 5 MEAN -10 0 0 0 0 0 0.0 4 8 4 12 6 10 8.0 22 80 100 74 86 100 88.0 30 60 74 8 96 94 81.0 40 10 6 0 10 2 5.6 CONTROL 0 0 0 0 0 0.0 NB. Numbers in bold italics are anomalous. They have not been included in the mean. ==> TEMP. (?c) MEAN PERCENTAGE GERMINATED -10 0.0 4 8.0 22 88.0 30 81.0 40 5.6 CONTROL 0.0 These results can now be used to perform statistical analysis and to plot a graph. Analysis To determine whether temperature has had an effect I shall use the Chi-Squared (?2) Test for Goodness of Fit. The Chi-Squared Test is used to determine whether the actual results of the experiment confirm the null hypothesis stated. For this investigation, the null hypothesis would be; 'temperature has no effect on the percentage of seeds that germinate' Whereas the alternative hypothesis would be; 'temperature does have an effect on the percentage of seeds that germinate' We will now determine whether the results fit the null hypothesis: The following results were obtained: -10?c 4?c 22?c 30?c 40?c % Germinated 0.0 8.0 88.0 81.0 5.6 By using these results we can determine the expected frequencies if the null hypothesis is correct: ==> Total percentage of seeds that...

To see the full version of this document, and 145,841 others