What is half of a quartile?
In a set of data, the quartiles are the values that divide the data into four equal parts. The median of a set of data separates the set in half. The median of the lower half of a set of data is the lower quartile ( LQ ) or Q1 .
How are quarter and quartile related?
As nouns the difference between quarter and quartile is that quarter is any one of four equal parts into which something has been divided while quartile is (statistics) any of the three points that divide an ordered distribution into four parts, each containing a quarter of the population.
What is the value of Q1?
Q1 is the middle value in the first half of the data set. Since there are an even number of data points in the first half of the data set, the middle value is the average of the two middle values; that is, Q1 = (3 + 4)/2 or Q1 = 3.5. Q3 is the middle value in the second half of the data set.
How to calculate the Order of the quartiles?
How to Calculate Quartiles Order your data set from lowest to highest values Find the median. This is the second quartile Q 2. At Q 2 split the ordered data set into two halves. The lower quartile Q 1 is the median of the lower half of the data. The upper quartile Q 3 is the median of the upper half
Which is the median of the lower quartile?
At Q 2 split the ordered data set into two halves. The lower quartile Q 1 is the median of the lower half of the data. The upper quartile Q 3 is the median of the upper half of the data. If the size of the data set is odd, do not include the median when finding the first and third quartiles.
Which is the second quartile of a range?
The second quartile Q 2 is easy to find. It is the median of any data set and it divides an ordered data set into upper and lower halves. The first quartile Q 1 is the median of the lower half not including the value of Q 2.
Which is the third quartile of a data set?
The third quartile Q 3 is the median of the upper half not including the value of Q 2. Find the median. This is the second quartile Q 2. At Q 2 split the ordered data set into two halves. The lower quartile Q 1 is the median of the lower half of the data. The upper quartile Q 3 is the median of the upper half of the data.