A1.pdf - STAT 359\/563 A01(Spring 2018 Assignment 1 Due 1:00pm January 25 1(5 marks Reading Chapters 1 2 3 4 How many hours did you spend reading

A1.pdf - STAT 359/563 A01(Spring 2018 Assignment 1 Due...

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STAT 359/563 A01 (Spring 2018) Assignment 1: Due 1:00pm, January 25 1. (5 marks) Reading: Chapters 1, 2, 3, 4 How many hours did you spend reading Chapters 1, 2, 3 and 4? 2. (18 marks) Suppose the following data comes from a study on plant growth (mm) where 2 plants are in each pot, 3 pots are within each plot and 2 plots are given one of two fertilizer treatments. Treatment 1 Treatment 2 Plot 1: Pot 1 Pot 2 Pot 3 Plot 2: Pot 1 Pot 2 Pot 3 14.6 13.2 16.4 7.1 6.8 10.0 15.2 12.9 12.2 7.7 6.0 8.3 Plot 3: Pot 1 Pot 2 Pot 3 Plot 4: Pot 1 Pot 2 Pot 3 18.5 22.2 24.7 9.7 6.8 10.4 16.7 18.8 20.3 8.8 9.2 10.5 (a) (5 marks) Arrange the data into a dataframe so that it can be analyzed. It should include the following variables: observation, growth, treatment, Plot, Pot. Print out this dataframe. (b) (3 marks) Sort the dataframe by plant growth and print out the sorted dataframe. (c) (2 marks) Calculate the mean and the variance of growth. (d) (4 marks) Plot growth data using a histogram (R function hist()). Clearly label the axis, title and use bin sizes of 2 mm.
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