# MATH 221 Week 2 Lab (Updated)

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## MATH 221 Week 2 Lab (Updated)

Statistical Concepts:

• Using Minitab
• Graphics
• Shapes of Distributions
• Descriptive Statistics
• Empirical Rule

# Data in Minitab

• Minitab is a powerful, yet user-friendly, data analysis software package. You can launch Minitab by finding the icon and double clicking on it. After a moment you will see two windows, the Session Window in the top half of the screen and the Worksheet or Data Window in the bottom half.

• Data have already been formatted and entered into a Minitab worksheet. Go to the eCollege Doc sharing site to download this data file. The names of each variable from the survey are in the first row of the Worksheet. This row has a background color of gray to identify it as the variable names. All other rows of the Minitab Worksheet represent a certain students’ answers to the survey questions. Therefore, the rows are called observations and the columns are called variables. Included with this lab, you will find a code sheet that identifies the correspondence between the variable names and the survey questions.

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• Complete the questions after the Code Sheet and paste the Graphs from Minitab in the grey areas for question 1 through 3. Type your answers to questions 4 through 11 where noted in the grey areas. When asked for explanations, please give thorough, multi-sentence or paragraph length explanations. The completed iLab Word Document with your responses to the questions will be the ONE and only document submitted to the dropbox. When saving and submitting the document, you are required to use the following format: Last Name_ First Name_Week2iLab.

Code Sheet

Do NOT answer these questions. The Code Sheet just lists the variables name and the question used by the researchers on the survey instrument that produced the data that are included in the Minitab data file. This is just information. The first question for the lab is after the code sheet.

Variable Name

## Question

DriveQuestion 1 – How long does it take you to drive to the school on average (to the nearest minute)?
StateQuestion 2 – What state/country were you born?
TempQuestion 3 – What is the temperature outside right now?
RankQuestion 4 – Rank all of the courses you are currently taking. The class you look most forward to taking will be ranked one, next two, and so on. What is the rank assigned to this class?
HeightQuestion 5 – What is your height to the nearest inch?
ShoeQuestion 6 – What is your shoe size?
SleepQuestion 7 – How many hours did you sleep last night?
GenderQuestion 8 – What is your gender?
RaceQuestion 9 – What is your race?
CarQuestion 10 – What color of car do you drive?
TVQuestion 11 – How long (on average) do you spend a day watching TV?
MoneyQuestion 12 – How much money do you have with you right now?
CoinQuestion 13 – Flip a coin 10 times. How many times did you get tails?
Die1Question 14 – Roll a six-sided die 10 times and record the results.
Die2
Die3
Die4
Die5
Die6
Die7
Die8
Die9
Die10