Refer to Exercises 1.30 and 1.31. Classify these data sets as either cross-section or time-series data. In

Question:

Refer to Exercises 1.30 and 1.31. Classify these data sets as either cross-section or time-series data.
In Exercise 30
Airline Mishandled Baggage
Reports
AirTran........... 30,801
Alaska............. 36,525
American.......... 205,247
Delta.............. 247,660
JetBlue........... 41,174
Hawaiian........... 11,987
In Exercise 31
CEO (millions of dollars)
Philippe P. Dauman (Viacom).......... 84.5
Ray R. Irani (Occidental)........... 76.1
Lawrence J. Ellison (Oracle)........... 70.1
Michael D. White (DirecTV)......... 32.9
John F. Lundgren (Stanley Black & Decker)..... 32.6
Brian L. Roberts (Comcast)......... 28.2
Robert A. Iger (Walt Disney).......... 28.0
Alan Mulally (Ford Motor).......... 26.5
Samuel J. Palmisano (IBM)......... 25.2