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A valid inference is a statement made from looking at the data.

Nice!

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population is a whole group of something, while the sample is  a small portion of the population.

Good Job!

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1) Calculate both sets of data
2) Look for the middle of the line of numbers

Yes! And to find the range, you would need to subtract the quartile 1 from quartile 3...good job Elliott!

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Right!

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A population is all the inhabitants of a particular area. A sample is a small amount of that particular area.

Thank you!

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1st) Find the range
2nd) Find the median
3rd) Find the quartiles
4th)Find the interquartile range

Thanks Elliott!

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They are both the same thing.

You got it!

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A line plot is the same as a dot plot.

Nice Job!

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1)You Can calculate both sets of data to find the interquartile range. 2)You have to start at the line and go down till your fingers finally touch each other.

Good! After you calculate the data and find Quartile 1 and Quartile 3, then you subtract them =)

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You first have to find the median, the range, the quartile, and the interquartile range to do the inference.

Yes! To make an inference, you need to know the information.

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The population is all the people who are present. And the sample is picked from the population. And a sample is smaller than the population.

Thank you Diego!

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1) You can find the interquartile range by catculating both sets of data. 2) You start at the line and count down till your fingers touch. 

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1) You can find the interquartile range by catculating both sets of data. 2) You start at the line and count down till your fingers touch. 

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Sicily

PERECT

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Before you find the interference you have to find the range, median, quartile, and last interquartile range.

NICE JOB SICILY

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You find the middle point from the whole day set, then you find the center of those two sets, then you have the three quartiles. Then you subtract the first quartile from the third, and then you have your interquartile range

NICE EXPLANATION

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That you have to find the range, the median, quartiles, and the interquartile range before you can go on and find the inference

GOOD JOB

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A population is the amount of people you want to get an answer for whatever you need to or want to find out. A sample is a smaller amount of people from the population that represents the population.

THANK YOU KELLIE

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A line plot is a line that shows information that has been graphed on the line and a dot plot uses dots to show information.

GREAT JOB! THEY ALSO CAN BE CONSIDERED THE SAME THING.

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They are the same

YES!!!!!

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What I got out of these videos was that to have a plot you have to find the Q2 or the 2nd quartile . For an example the Q2 could be 3. You find the interquartile range by moving by each number until you hit the middle number.

REMEMBER: YOU HAVE TO SUBTRACT THE Q1 FROM Q3 AND THAT IS THE RANGE =)

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You can find the interquartile range by subtracting the first quartile from the third quartile.
The median/ Quartile 2 is the number directly in the middle of the data set.

GOOD EXPLANATION

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1)You can find the interquartile range by calculating both data sets 1 & 2

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2)You have to take your line and count down from each side till your fingers touch

Yes, once your fingers touch, then that is the Median =)

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You have to find the range, median, quartile, & interquartile range before the interference

Yes, before making an inference, it is good to know all those things!

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The sample is the portion of the group while the population is the entire group

AWESOME JOB!

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1) First you find the median of the data set ( 2nd quartile ). Then you go to the lower half of the data set
( 1st quartile ) and find the median of that. Last, you to the upper half
( 3nd quartile ) and find that median. Also you subtract your 1st quartile from your 3rd quartile and that is how you find the interquartile range.

FANTASTIC RESPONSE!

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What I learned from video 8-1 is that you want unbiased sample in stead of a biased sample because..

Biased sample - A group of people  ( a population) that is asked something but has not given an answer to what was asked.

Unbiased sample - A population that everyone has an equal chance of being asked, the sample represents the entire population.

GREAT!

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What I got from this video is that biased is an opinion of one group of people or something. Unbiased is an opinion that is coming from anyone, which they are equal.

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A valid inference is a conclusion formed off what was said.

Name?

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The population is the entire group surveyed.

Name?

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What I got from this video was that to find the inference you have to find the range, median, quartiles, and interquartile range before you can get the inference.

Nice!

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I think a valid inference is a valid conclusion formed off what has been said?

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I think a valid inference is a valid conclusion formed off what has been said?

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Name?

Nice Job!

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What I got from this video is that when you have to get multiple samples you have to make sure you have equal samples so you don't have one group be overpowering another group.

Yes. And the population is the entire group you are surveying, while the sample is just a small portion of the group.

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A sample is  the opinion that wont affect the situation because its one type of thing (biased) and population is all peoples opinions overall, different people from different groups(non-biased).-Gabi D.

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A sample is  the opinion that wont affect the situation because its one type of thing (biased) and population is all peoples opinions overall, different people from different groups(non-biased).-Gabi D.

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Also, Population and sample both deal with the number of people. Population is the entire group while the sample in a small part of the group =)
Thank you Gabi!

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This is Roscoe: A Sample is a opinion that doesn't really affect the entire population(Biased) as used in the video for part A with the cheerleaders.
Population is when a larger variety of people are asked the same question, affecting the entire population, it can be stratified, or, not, as used in the example with the two student from every table being asked the same question.

GOOD JOB! Thanks Roscoe!