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anonymous
 one year ago
A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first, second, and thirdperiod classes are as follows:
First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0
Second period: 3, 2, 3, 1, 3, 4, 2, 4, 3, 1, 0, 2, 3, 1, 2
Third period: 4, 5, 3, 4, 2, 3, 4, 1, 8, 2, 3, 1, 0, 2, 1, 3
anonymous
 one year ago
A survey was taken of students in math classes to find out how many hours per day students spend on social media. The survey results for the first, second, and thirdperiod classes are as follows: First period: 2, 4, 3, 1, 0, 2, 1, 3, 1, 4, 9, 2, 4, 3, 0 Second period: 3, 2, 3, 1, 3, 4, 2, 4, 3, 1, 0, 2, 3, 1, 2 Third period: 4, 5, 3, 4, 2, 3, 4, 1, 8, 2, 3, 1, 0, 2, 1, 3

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Which is the best measure of center for second period and why? Mean, because there are no outliers that affect the center Median, because there is 1 outlier that affects the center Interquartile range, because there is 1 outlier that affects the center Standard deviation, because there are no outliers that affect the center

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Can you see any outliers in the data for the second period?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.00 is an outliner in second period

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1I don't think that zero is an outlier. It is not far removed from the other values in the set.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But its the least common and it has the least ammount from the data set not to mention its the furthest from all the numbers.

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1An example of an outlier is 9 in the first period.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Outliner  A value that "lies outside" (is much smaller or larger than) most of the other values in a set of data.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The outliner is 8 in 3rd period

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1There are accepted ways to decide whether or not a point should be regarded as an outlier. A point is an outlier if: 1) It is more than two standard deviations away from the mean or 2) It is more than 1.5 times the interquartile range away from the nearest quartile. Do you want to use one of these methods to decide whether or not 0 is an outlier in the data for the second period?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0There are no Outliners in Second Period.... are there?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1I believe that there are no outliers in the data for the second period. If you accept that, the choice of answer is between A and D. Is the standard deviation a measure of the center?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Its a measurment done from the mean

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that is what a stander mediation is

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Standard deviation is a measure of spread. It is not a measure of the center. Can you now see what is the correct choice of answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you very much Kropot
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