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when you list these numbers 21 23 24 22 24 25 23 23 22 from smallest to biggest, what do you get?
21 22 22 23 23 2324 24 25
what is the middle most number of this list 21, 22, 22, 23, 23, 23, 24, 24, 25
that is the median
focus on the smaller half of the data |dw:1435887285192:dw|
what is the median of 21,22,22,23 ?
that is the value of Q1
and finally, the min and max are just as you expect: the smallest and largest values |dw:1435887601476:dw|
five number summary: min = 21 Q1 = 22 median = 23 Q3 = 24 max = 25
that's for the first one or that's all I need
one more thing you need the IQR
IQR = Q3 - Q1
IQR stands for interquartile range
so what would I write for my answer
I wrote the answer above more or less. Re-read what I posted
it says for both sets can u help me with the second one
you follow the same steps. Give it a shot and tell me what you get
min = 20 Q1 = median = 23 Q3 = max = 50
so far so good
look at the list of values smaller than the median find the median of this list to get Q1
idk can you help
did you sort the values?
which values are less than the median?
20 21 22
so you look at the lower half 20,20,21,22 find the median of this lower half
just like we did in the last problem
add them up and divide by 2
do you know how to find Q3 ?
find the median of the upper half of the data
I need help
find the median of all the numbers to the right of the median (look at the sorted data)
sort the data look at all of the values to the right of the median find the median of this smaller data set to get Q3
add those two values up and divide by 2
that is Q3
now just compute the IQR
IQR = Q3 - Q1
Q1 = 20.5 Q3 = 35 IQR = Q3 - Q1 = ??
no you subtracted in the wrong order
you should do 35 - 20.5
ok when u write everything out
Are the box plots symmetric