MATH201_Worksheet1-1 (2)

MATH 201 Statistics for Environmental Professionals ● Worksheet 1 Name: Brianna Michelle Robinson Section 1. Suppose that you are a wildlife biologist working in a National Park. One of your tasks is to conduct demographic surveys of American alligators in the park. You have conducted a nightlight survey and measured encountered alligators. The survey data are shown in the below table. Answer the following questions using this dataset. Animal ID Habitat type Water temperature (°C) Head Length (cm) Total Length (cm) Weight (kg) Sex Number of deformities 1 Marsh 20 21.2 144.5 9 Female 0 2 Marsh 19 25.6 185.2 16 Male 0 3 Marsh 20 20.4 139.9 8 Female 0 4 Marsh 19 26.8 203.3 19 Female 1 5 Marsh 20 30.0 211.5 17 Male 0 6 Marsh 22 30.0 224.5 28 Female 1 7 Marsh 20 29.5 212.8 17 Male 0 8 Marsh 20 26.9 195.8 19 Male 0 9 River 23 25.7 186.9 19 Male 0 10 River 23 32.9 247.7 39 Male 0 11 River 23 29.6 210 27 Female 0 12 River 25 24.3 178.5 15 Male 2 Question 1. How many variables are in the data set? Refer to textbook 1.1. (5 pts.)  There are 8 different Variables in this dataset which are: Animal ID, Habitat Type, Water temperature in Celsius, Head length in centimeters, Total Lenth in centimeters, Weight in kilograms, Sex, and Number of deformities. Question 2. List all numerical (quantitative) variables and classify them into continuous or discrete. Refer to your textbook 1.1 & 1.2. (5 pts.)  Data may come from a population or from a sample. Lowercase letters like x �  or y �  generally are used to represent data values. Most data can be put into the following categories:  Qualitative  Quantitative  Qualitative data  are the result of categorizing or describing attributes of a population. Qualitative data are also often called  categorical data . Hair color, blood type, ethnic group, the car a person drives, and the street a person lives on are examples of qualitative data. Qualitative data are generally described by words or letters.