find the upper and lower quartiles and mean range and interquatile range plz!!!!
106,112,116,118,129,130,134,143,146.
show how you find it plz!!!
2007-02-08 13:41:37 · 2 answers · asked by Mn Guy =) 3 in Science & Mathematics ➔ Mathematics
First find the median...that 's the middle number. In this case you have two so it's the average of them (118 + 129)/2.
Then take the upper half of the numbers and find the median of just those numbers (130 + 134)/2...that's the upper quartile
Take the median of the lower half in the same way. That's the lower quartile.
Notice how you've cut your data set into 4 pieces...quarters...that's where the word "quartile" comes from.
The interquartile range is the difference between the upper quartile and the lower quartile.
The mean is just the average. Add them all up, count how many there are and divide your total by that number.
The range is the difference between the highest data point and the lowest data point. 140-106
2007-02-08 13:54:14 · answer #1 · answered by Karen C 3 · 0⤊ 0⤋
do your own homework
2016-05-23 23:28:49 · answer #2 · answered by Tresca 4 · 0⤊ 0⤋