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Author Arnold ♦ Are, That ♦ Arnold, Kathryn E. ♦ Owens, Ian P. F. ♦ Marshall, N. Justin
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Data Set Leaf Fraction ♦ Sample Id ♦ Different Combination ♦ Sample Data Support ♦ Population Parameter ♦ Decay Rate ♦ Q-q Plot ♦ Statistical Term ♦ Natural Logarithm ♦ Different Specie ♦ Explanatory Variable ♦ Following Question ♦ Leaf Mass ♦ Hypothesis Testing ♦ Mesh Bag
Abstract attached. For each paper answer the following questions: a. Is the study observational or experimental? b. What factors or explanatory variables are they interested in studying for their affects on the animals? c. What variables are they measuring on the animals? d. State in words all sets of hypotheses that the authors are interested in testing (note that the authors could be interested in more than one set of hypotheses!) e. Restate all sets of hypotheses in statistical terms, i.e. in terms of the population parameters that are believed to be affected by the treatments. C) I am providing a data set “Leaf Fractions.xls”. The researcher is interested in the effect of mixtures of different species on the decay rate of masses of leaves in streams. The scientist placed mesh bags filled with different combinations of species of leaves and removed them periodically to measure remaining mass. A subset of the data is provided. The data are the sample ID, percent of leaf mass remaining after 30 days of submersion (FRACTION), and the natural logarithm of percent remaining (L_FRACTION). Please use the three approaches we learned in class (histograms, Q-Q plots, and hypothesis testing) for determining if the sample data support the argument that the populations of
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study