Chapter 1 Business Statistics
BUS 271 CHAPTER ONE HOMEWORK: TERMS
1. In each statement that follows, tell whether descriptive or inferential statistics were used. _D____ a. The average price of a home sold in Allegheny County the week of April 22-28 $75,328. _D____ b. According to the Census Bureau, 20% of all American workers get to work via carpool.
__I___ c. The National Eye Institute has halted a clinical trial on a type of eye surgery, calling it ineffective and possibly harmful to a person’s vision.
I____ d. “Allergy therapy may make bees goes away.”
D_____ e. The Gallup Poll says 1 out of 10 Americans is a member of a health club or fitness center.
I_____ f. Drinking decaffeinated coffee can raise cholesterol levels by 7%.
D_____ g. According to the Court Administration of Pennsylvania 14% of trail-ready civil actions and equity cases on Philadelphia during 1993 were decided in less than six months.
__D___ h. Cigarettes were associated with 29% of the 4,470 civilian fire deaths in 1989.
2. Classify each as nominal-level, ordinal-level, interval-level, or ration-level data. _R___ a. Horsepower of a motorcycle engine.
_O____ b. Ratings of newscasts in Houston (poor, fair, good, excellent).
_I____ c. Temperature of automatic popcorn poppers.
_R____ d. Time required by drivers to complete a course.
__R___ e. Salaries of cashiers of Day-Night grocery stores.
N_____ f. Marital status of respondents to a survey on savings accounts.
__R___ g. Ages of students enrolled in a martial arts course.
_R____ h. Weight of beef cattle fed a special diet.
__O___ i. Rankings of weight lifters.
_R____ j. Pages in the telephone book of the city of Los Angeles.
3. Classify each variable as qualitative or quantitative. _QUAL____ a. Colors of jackets in a men’s clothing store.
1. In each statement that follows, tell whether descriptive or inferential statistics were used. _D____ a. The average price of a home sold in Allegheny County the week of April 22-28 $75,328. _D____ b. According to the Census Bureau, 20% of all American workers get to work via carpool.
__I___ c. The National Eye Institute has halted a clinical trial on a type of eye surgery, calling it ineffective and possibly harmful to a person’s vision.
I____ d. “Allergy therapy may make bees goes away.”
D_____ e. The Gallup Poll says 1 out of 10 Americans is a member of a health club or fitness center.
I_____ f. Drinking decaffeinated coffee can raise cholesterol levels by 7%.
D_____ g. According to the Court Administration of Pennsylvania 14% of trail-ready civil actions and equity cases on Philadelphia during 1993 were decided in less than six months.
__D___ h. Cigarettes were associated with 29% of the 4,470 civilian fire deaths in 1989.
2. Classify each as nominal-level, ordinal-level, interval-level, or ration-level data. _R___ a. Horsepower of a motorcycle engine.
_O____ b. Ratings of newscasts in Houston (poor, fair, good, excellent).
_I____ c. Temperature of automatic popcorn poppers.
_R____ d. Time required by drivers to complete a course.
__R___ e. Salaries of cashiers of Day-Night grocery stores.
N_____ f. Marital status of respondents to a survey on savings accounts.
__R___ g. Ages of students enrolled in a martial arts course.
_R____ h. Weight of beef cattle fed a special diet.
__O___ i. Rankings of weight lifters.
_R____ j. Pages in the telephone book of the city of Los Angeles.
3. Classify each variable as qualitative or quantitative. _QUAL____ a. Colors of jackets in a men’s clothing store.