Business Statistics Ch. 1-4

10 students' marks recorded to estimate the average marks of the class.

Sample

A study to find the quality of matchsticks in a bundle of 100 matchboxes.

Sample

A survey to rank the famous television shows in United States.

Sample

Two thousand five hundred frequent business travelers are asked which midwestern city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. 118 liked Indianapolis best, 415 liked Saint Louis, 1260 liked Chicago, and the remainder preferred Milwaukee. Develop a frequency table and a relative frequency table to summarize this information. (Round relative frequency to 3 decimal places.)

City Frequency Relative Frequency Indianapolis 118 0.047 St. Louis 415 0.166 Chicago 1,260 0.504 Milwaukee 707 0.283

AVX Stereo Equipment, Inc., recently began a "no-hassles" return policy. A sample of 505 customers who recently returned items showed 320 thought the policy was fair, 150 thought it took too long to complete the transaction, and the rest had no opinion. On the basis of this information, make an inference about customer reaction to the new policy. (Round your answers to 1 decimal place.)

Fair 63.4 % Too long 29.7 % No opinion 6.9 % The above data suggests that majority of the customers believe the policy is fair.

From the publication of Statistical Abstract of the United States, data are taken and represented below with details. What kind of scale can be used to measure them? The states of California and Texas were ranked 1 and 2 in the population survey of July 2005.

Ordinal

A research project to find how many heart attack patients are admitted on January 1 to a famous hospital.

Population

All the people eligible to vote in the United States to elect the president for the next election.

Population

An evaluation of the creativity of the director of three films.

Population