Help With a MEMORANDUM and fill out a matrix form - SAMPLES have been attached
Descriptive Statistics – Matrix Sample
Sample – What can we learn from the data?
| Item to be Addressed | Data Source | Example – Airline Arrival Study |
| What is the name of the data? | See the title. | Airline Arrival Study |
| In general, what is the data set | See the first sentence of the file BUGN 280 Excel Project Date File Information document. | A random sample of 444 flights from LAX to JKF in New York. |
| What data is included in the sample? | See Variables of Interest worksheet in your data set. | In your own words… There are five continuous variables: arrival delay and departure delay in minutes, taxi time from gate to take-off and from landing to gate, and air time. The two categorical variables are the airline carrier and the time of departure – am or pm. |
| Is any of the data coded? How? | See Variables of Interest worksheet in your data set. | The name of the carrier: 1 is American, 2 is United. Note: Values for arrival mean early arrivals, 0 = on time, and + values mean later than scheduled. |
| Where did the data come from? | See your data set worksheet tabs. | Bureau of Transportation Statistics, US Government |
| How do you think the data might have been collected? | Guess or see source. | Flight recorder or flight log |
| Why do you think the data might have been collected? | Guess or see source. | Provide information to traveling public on arrival/departure performance against the schedule. |
| Who is the suggested target of this information? | See description file, or look up the information. | COO United Airlines |
| What are the questions the target would like to address or information he/she would like to have? | Think about what questions you might be able to answer. | What is the range of times or the delays? What is the average delay? Do the delays vary by time of departure? Which airline has the better record? |
