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Main content
Current time:0:00Total duration:2:12
AP.STATS:
DAT‑2 (EU)
,
DAT‑2.A (LO)
,
DAT‑2.A.1 (EK)
,
DAT‑2.A.2 (EK)

Video transcript

administrators at Riverview high school surveyed a random sample of 100 of their seniors to see how they felt about the lunch offerings at the school's cafeteria so you have all of the seniors I'm assuming there's more than a hundred of them and then they sampled a hundred of them so this is the sample so the population is all of the seniors at the school that's the population all of the seniors and they sampled a hundred of them so the hundred seniors that they talked to that is the sample that is the sample so they tell us identify the population in the sample in the setting so let's just see which of these choices actually match up to what I just said it like always I encourage you to pause the video and see if you can work through it on your own so the population is all high school seniors in the world the sample is all of the seniors at Riverview high no this is not right we're not trying to figure out we're not trying to get an indication of how all of the high school seniors in the world feel about the food at Riverview high school we're trying to get an indication of how the seniors at Riverview high school feel about the the lunch at the school's cafeteria so they did a sample of hundred of them so this is definitely not going to be let me cross this one out the population is all students at Riverview high the sample is all of the seniors at Riverview high well they didn't they clearly didn't sample all of the seniors they sample a hundred of the seniors so this isn't going to be right either let's hope that the third choice is working out the population is all seniors at Riverview high the sample is the hundred seniors survey yep that's exactly what we talked here we're trying to get an indication about how all of the seniors at Riverview high feel about the food the lunch offerings we probably think it's impractical or the administrators feel it's impractical to talk to everyone so to get exactly what the population thinks so instead they're going to a random sample of a hundred of them so the sample is the hundred seniors who are actually surveyed