Question

A random sample is also called an unbiased sample.

True
False

A company surveys every tenth person in the phone book. What type of sampling did the company use?

biased sample
self-selected sample
stratified sample
systematic sample

Fifty students were randomly selected to take part in a survey about their favorite school lunch. Each student was allowed to only pick one item. The results are shown below.

Food Item Preferred- Number of Students
pizza- 27
cheeseburger- 14
salad bar- 9
Based on the information above, if the school served 500 lunches, how many pizzas can they expect to serve?

27
270
140
90

Answer 1

a randomized sample can be biased, but generally we randomize our sample from a population so we can avoid bias.

Answer 2

so false?

Answer 3

look at the key phrase I used "BUT"

Answer 4

idk number 2 :(

Answer 5

that means you did not do your reading

Answer 6

do you want a book to use?
it will have what you need for your statistics course

Answer 7

@imqwerty question 2

Answer 8

I think its Systematic