Unit 8 Quiz- Statistics

Sam tested every 50th candy bar from the assembly line to make sure there were enough peanuts in each bar. He found 15% did not have enough peanuts. Which type of sampling did he use?

• Cluster

• Systematic

• Convenience

• Simple Random

The teacher samples her class by randomly selecting 5 girls and then randomly selecting 7 boys. This type of sampling is called?

• Stratified

• Systematic

• SRS

• Cluster

The teacher samples her class by selecting every third person on her class list. Which type of sampling method is this?

• SRS

• Systematic

• Stratified

• Cluster

The teacher samples her class by selecting all students sitting at table 1 and table 5 in her classroom. This sampling technique is called?

• SRS

• Stratified

• Systematic

• Cluster

Source of bias that occurs when you ask people who are EASY to ask

• Response Bias

• Convenience Sampling

• Nonresponse

• Voluntary Response

To find out what the preferred ice cream flavor is, wait outside an ice cream parlor and ask every 4th person leaving the store to name his or her favorite flavor until you get 25 responses is an example of...

• Convenience Sample

• Simple Random Sample

• Stratified Random Sample

• Systematic Sample

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.

She selects the five closest to her desk.

• simple random

• Voluntary Response

• Convenience

• Systematic Random

A ___ is a small portion of the population used to gather data from.

• Systematic Sampling Method

• Sample

• Population

• Bias

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year

• to randomly choose some 7th grade students to select a location

• to ask all 7th grade teachers and administrators for a location

• to ask the student council to choose a location

The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?

• The students will be selected from the choir

• The students will be selected randomly throughout the school

• The students will be selected on Wednesday afternoon before the choir concert

• The choir director will select five students from each of the forty homerooms in the school