The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 8 hour periods. Below is the sample: 150 164 124 98 178 164 79 126 171 164 97 133 164 124 150 111 171 93 From this data set, compute the sample mean, median, mode and mid range. Compute the 1st quartile and 3rd and interpret their meanings.

i put them in order and then added them all up and divide by 18 to get the Mean.

mean is correct... as u calculated it

i need help with the mdian mode and mid range and how to compute the 1rst and 3rd

mode is the observation repeated the max no of times...

so that would be 164 because there is 4 of them

correct again...

median?

now u have 18 observations i.e an EVEN number of observations.... so median = average of the middle two (after they have been arranged in ascending order)

150 cuz there is 2 of them

it is mean of 9th and 10th observations if both are 150 , then median is 150....

it is 133 and 150 so add them up and divide by 2?

just let me check if u got them in right order or not...

79 93 97 98 111 124 124 126 133 150 150 164 164 164 164 171 171 178 first you put them in order.

yes median is (133+150)/2

ok now for mid range?

79 is lowest and 178 is highest

ok how do i get the 1rst and 3rd quartile and interper there meaning

sorry made a mistake in sign....... highest observation + lowest observation Mid-Range = ---------------------------------------- 2

so it is (178+79)/2

ok i got the answer 128.5

Compute the 1st quartile and 3rd and interpret their meanings.

wait sandii i'll have to check on these terms as i am not familiar with them

ok .. sorry

first quartile is 111 third quartile is 164 (the third one from left) sandii, you do not seem to be familiar with the terms but doing statistics. How come??? Asking, so that i can answer u better.....

i grasp the statistics better then i did the terms

Hope this explanations helps ... First Quartile: The first quartile of a set of numbers is the value in which 25% of the numbers are below it, 75% of the numbers are above it when the numbers are arranged in ascending (increasing) order. Third Quartile: The third quartile of a set of numbers is the value in which 75% of the numbers are below it, 25% of the numbers are above it when the numbers are arranged in ascending (increasing) order.

ok.. that makes sense...

i guess u r now gonna give me a bunch of medals for these answers !!! o( :})

thank you hon!~ :)

im not done yet.. i still have a lot more problems to do.. lol

go.....kill them.......

ughhh... math is my weakest LINK.... lol

by the way, what's yr full/real name.....i hv put my real name...

sandi

i see..... what standard r u in n located where??

im in wisconsin u?

Delhi---capital of India

thats kewl.. r u a math teacher? or student and how do u know all the answers.. lol

I am a regular job in a private company, and in the evenings i give private tuitions to kids n teach science, maths and social sciences upto 10th standard and english upto 8th standard.... so thats why i know many things...

thats kewl.. :)

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