What are the steps to find the lower and upper quartiles of a data set? 1. order the values. 2. find the median. 3. find the lower quartile. 4. find the upper quartile. 1. find the median. 2. find the lower quartile. 3. find the upper quartile. 1. order the values. 2. find the lower quartile. 3. find the upper quartile. 1. order the values. 2. find the lower quartile. 3. find the upper quartile. 4. find the median.

The steps to finding the upper and lower quartiles are given in the first choice.

1.  Order the data from least to greatest. If you don't do this, the data is random.

2.  Find the median - you will do this so that you can find the midpoint of the data set (half of of the data is smaller and half of the data is larger).

3.  Find the lower quartile - this is the half of the lower half of numbers; think of it as breaking the lower half of the data into 2 sections. 

4.  Find the upper quartile - this is the half of the greater half of numbers; this will break the upper half of the data into 2 sections. 

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.