# Brock University Mathematics Questions

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USE R-studio to complete and answer questionsAll requirement in file “GEOG 3P22 lab2

GEOG 3P22: Lab 2
Descriptive Analysis and Exploring Relationships
Lab 2: Descriptive Analysis and Exploring Relationships
GEOG 3P22: Quantitative Research Design and Methodology
Due in one week (you should also consider finding other data to do analyses covered in
labs so that you are ready for presenting during lab 6 – give it a try with this lab).
Introduction:
Hurricanes have always blown through the eastern seaboard and Gulf Coast, and have
had varying levels of impact on the people that live there. Prediction of such events is
crucial for adequate preparation. Meteorologists must use various measures to predict
weather conditions. Barometric pressure is a key variable for predicting wind speeds
(during hurricanes). As hurricanes approach land, barometric pressure drops, allowing
high-pressure systems to increase the intensity of the storm. Keep this relationship in
mind as you explore the hurricane data.
Included with this lab is hurricane data that dates back to 1851. Each data record
represents a segment of a hurricane where both barometric pressure and wind speed
were recorded. You will use the functionality of R to explore each of these datasets and
the relationship between them. You will use the data to create a model and assess how
its accuracy in predicting the wind speed of Hurricane Katrina, which devastated the
Gulf Coast.
You will then use the skills you have learned to perform similar analysis on the data that
you have collected. Questions listed throughout this lab pertain to both the hurricane
analysis and your analysis of your own data. In addition to answers to the questions,
you are asked to submit an R script (as in Lab 1), which includes all of the code used to
answer the questions. Refer to the marking rubric at the bottom of this document.
Code
You can use the R_Script_Template_Lab_2 file to copy and paste the code listed in this
lab to see how to perform the analysis.
Data (for the hurricane analysis):
The data used in this lab was downloaded from the US National Oceanic and
Atmospheric Administration (NOAA) website ( The
file with all hurricane track segments was used to make three separate files:
All_Hurricanes_segments.csv (includes all hurricane track segments on land and water
1
GEOG 3P22: Lab 2
Descriptive Analysis and Exploring Relationships
since 1851).
Hurricanes_all_landfall.csv (includes all hurricane track segments that hit land).
Hurricanes_Gulf_Coast.csv (includes only the hurricanes that hit the Gulf Coast).
Refer to the map accompanying this lab or orient yourself with the above datasets. For
this lab we will be using only the hurricane track data where the events hit land. All
data is provided for you in case you are interested in exploring it too
(All_Hurricanes_segments.csv).
Step 1: Establish your workspace

Download the data for this lab from Sakai (Resources) and copy it to your folder
on the W drive. The data files required for this lab include
Hurricanes_all_landfall.csv, Hurricanes_Gulf_Coast.csv.
Once copied, double click on one of the .csv files to open it in Excel. (All three
files have the same format, so you just need to check out one).
o The data in each file include Wind speeds (WIND_KTS), barometric
pressure (PRESSURE), category (CAT), name, and date.
o Note that wind speed is in knots and pressure is in millibars (mB).
Shut down Excel and start R.
Setup your working directory in R:
Ø setwd(“W:/GEOG_3P22/your_folder/Lab_3”)
Step 2: Read in the hurricane data and organize your variables
Read in each data file:
Ø All_land_hurricanes
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