Tourism GI Geographical Investigation

Susan polled 587 people throughout each city in her county.  Each city is the same size.  Is this sample of the residents of cities in the county likely to be biased?

• yes
• no

Leslie surveyed the 9 youngest students in the elementary school.  Is this sample of the students in the school likely to be representative?

• yes
• no

Henry surveyed the first 7 celebrities to arrive at the movie premiere.  Is this sample of celebrities likely to be biased?

• yes
• no

Carrie spoke with the 27 donors who gave the most money.  Is this a random sample of the donors?

• yes
• no

Without looking, Christine took 2 flash cards out of her box of flash cards.  Is this a random sample of the flash cards?

• yes
• no

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

Sam tested every 5th 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?

• Random

• Systematic

• Stratified

Which of the following is a hypothesis? (You may choose more than 1 answer)

• Tourism brought negative impact to the environment.

• Tourism brought positive impact to the economy.

• Has tourism brought positive impact to the economy?

• Has tourism brought negative impact to the environment?

How do we ensure that the data collected is reliable. (you may select more than 1 answer)

• Use random sampling to choose people to interview

• Sufficient frequency (no. of times you collect data)

• Draw a graph to present the answer

• Sufficient sample size

What does a 'valid' data mean?

• Useful to help to prove the hypothesis

• Not useful to prove the hypothesis

• Reliable data

• Unreliable data