prob and stats ch. 1

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

It's the last day of school and Jason wants to know what the most popular way to celebrate. Which survey would work best?

• Ask your teachers

• Don't worry about it and CELABRATE!!

• Ask the first 30 people to exit the mall 

• Ask the first 100 people to exit school

Recording data on how yellow or orange leaves turn in October by describing them as "green" "slightly yellow" "very yellow" or "orange" is ____ data

• quantitative

• qualitative

Measuring the number of times a person breathes after exercise involves ____ data. 

• quantitative

• qualitative

When scientists collect data that is measurable with numbers, we call it...

• qualitative

• quantitative

• hypothetical

• graphable

Two types of data scientists collect are...

• hypothesis and theory

• qualitative and quantitative

• myths and fables

• metric and standard measurements

You need to collect data on how the feeling of fabric affects someone's mood.  You would collect ____ data.

• quantitative

• qualitative

The entire pool; the total set of people/objects that can be studied

• population

• sample

• datum

• probability

A sample in which each individual or object in the entire population has an equal chance of being selected.

• biased sample

• population

• random sample

• sample

A television station is interested in predicting whether voters in its viewing area are in favor of federal funding for health care. It asks its viewers to phone in and indicate whether they support or are opposed to this. Of the 2241 viewers who phoned in, 1574 were opposed to federal funding for healthcare.
Referring to the information above, the viewers who phoned in are

• a voluntary response sample

• a convenience sample

• a census

• a population