Question

Two airlines each made 30 flights. The dot plots shown compare

how many minutes the actual arrival times were before or after
the scheduled arrival times of these flights.
Negative numbers represent the minutes the flight arrived before its scheduled time.
Positive numbers represent the minutes the flight arrived after its scheduled time.
Zero indicates the flight arrived at its scheduled time.
Assuming you want to arrive as close to the scheduled time as possible, from which
airline should you buy your ticket? Justify your response by addressing both the
measures of center and spread of the distributions.

Answer 1

Answer: Airline P since the median is lower and the SDR is lower

Explanation:

Answer 2

To arrive as close to the scheduled time as possible, I will buy ticket at airline P. This is because, airline P has less variability and more responses are closer to zero.

Measures of Center (Central Tendency):

Airline P: The dot plot for Airline P shows a concentration of data points around zero, indicating that the majority of flights arrived close to their scheduled time. The center of the distribution is near zero.

Airline Q: The dot plot for Airline Q also has a concentration of data points around zero, but there seems to be more variability compared to Airline P.

Measures of Spread (Variability):

Airline P: The spread of the dot plot for Airline P appears to be smaller. This means that the actual arrival times are more consistent and closer to the scheduled times.

Airline Q: The dot plot for Airline Q shows more variability, suggesting that the actual arrival times vary more widely from the scheduled times.