Methods of Collecting Data in Statistics

• systematic

• cluster

• convenience

• stratified

• self selected

• systematic

• cluster

• self-selected

• stratified

• random sample

Choose the correct sampling method:

A student council wants to know whether students would like the council to sponsor a mid winter dance or mid winter carnival this year

→

Survey 20 randomly selected freshmen, 20 randomly selected sophomores, 20 randomly selected juniors, and 20 randomly selected seniors

• systematic

• random sample

• convenience

• stratified

• cluster

Choose the correct sampling method:

A student council wants to know whether students would like the council to sponsor a mid winter dance or mid winter carnival this year

→

Survey those who ask the council president for a questionnaire

• cluster

• self - selected

• stratified

• random sample

• convenience

Choose the correct sampling method:

A student council wants to know whether students would like the council to sponsor a mid winter dance or mid winter carnival this year

→

Survey a random selection of those who happen to be in the cafeteria at noon

• random sample

• self - selected

• convenience

• stratified

• cluster

• the residents

• the officers

• the mailman

The officers of a neighborhood association want to know whether residents are interested in beautifying the neighborhood and, if so, how much money they are willing to contribute toward the costs involved. The officers are considering two methods for gathering data:

Method A: Call and survey every tenth resident on the association’s roster.

Method B: Randomly select and survey 10 residents from among those who come to the neighborhood block party.

→

Which sampling method is most likely to result in a representative sample of the population ?

• Method A

• Method B

The officers of a neighborhood association want to know whether residents are interested in beautifying the neighborhood and, if so, how much money they are willing to contribute toward the costs involved. The officers are considering two methods for gathering data:

Method A: Call and survey every tenth resident on the association’s roster.

Method B: Randomly select and survey 10 residents from among those who come to the neighborhood block party.

→

Describe another sampling method that is likely to result in a representative sample of the population

• Select residents from odd numbers homes

• Have residents come into the association office to complete the survey

• randomly select names from a roster

Decide whether the sampling method could result in a biased sample:

On the first day of school, all of the incoming freshmen attend an orientation program. Afterward, the principal wants to learn the opinions of the freshmen regarding the orientation. She decides to ask 25 freshmen as they leave the auditorium to complete a questionnaire

• biased

• not biased

Decide whether the sampling method could result in a biased sample:

The members of the school drama club want to know how much students are willing to pay for a ticket to one of their productions. They decide that each member of the drama club should ask 5 of his or her friends what they are each willing to pay

• biased

• not biased