Can someone help me on Measures of Variation please.

Question

anonymous · Answer

attachment

amistre64 · Answer

how many data points do we have?

anonymous · Answer

is it 10 points

amistre64 · Answer

and a quartile is 1/4 of the data

1q = 10/4

3q = 3*10/4

what are those values?

anonymous · Answer

46

amistre64 · Answer

46 makes not sense ...

amistre64 · Answer

what is 10/4?

what is 3*10/4?

anonymous · Answer

10/4 is 2.5

amistre64 · Answer

good, the rule is, if we have a decimal, rnd up ..  1q = 3

3*10/4?

anonymous · Answer

3 x 10/4 = 30/4

amistre64 · Answer

good

2 < 10/4 < 3
                 ^^ 1q


7 < 30/4 < 8
                  ^^ 3q

the IQR is the range between these inner quartiles

what is the range between the 3rd and 8th values?

anonymous · Answer

I don't get what's the value

amistre64 · Answer

you need to choose the 3rd and 8th values first

do you understand how to read the chart?

anonymous · Answer

yes

amistre64 · Answer

then the 3rd and 8th values should be simple for you to obtain ... what are they?

anonymous · Answer

31, 33, 35, 41, 43, 46, 48, 49, 49, 50

amistre64 · Answer

31, 33, 35, 41, 43, 46, 48, 49, 49, 50
             ^                            ^
           3rd                         8th

out IQR is from 35 to 49,  whats the range between those values?

amistre64 · Answer

range = high - low ....

anonymous · Answer

is it 14 because I subtracted 49 - 35 and got 14

amistre64 · Answer

good, then thats the IQR they are looking for

anonymous · Answer

so the answer is 14

amistre64 · Answer

yes, that is what we have determined thru the process.

anonymous · Answer

thank you for helping I will give you a medal

amistre64 · Answer

youre welcome, and good luck

anonymous · Answer

ok