METHODS OF DATA ANALYSIS
MEASURES OF DISPERSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
50th percetile
|
|
|
25th percentile
|
|
|
2nd decile
|
|
|
3rd quartile
|
Detailed explanation-1: -25th Percentile-Also known as the first, or lower, quartile. The 25th percentile is the value at which 25% of the answers lie below that value, and 75% of the answers lie above that value. 50th Percentile-Also known as the Median. The median cuts the data set in half.
Detailed explanation-2: -Quartiles are a type of percentile. The first quartile (Q1, or the lowest quartile) is the 25th percentile, meaning that 25% of the data falls below the first quartile. The second quartile (Q2, or the median) is the 50th percentile, meaning that 50% of the data falls below the second quartile.
Detailed explanation-3: -Along with the minimum and maximum values of the data set, the quartiles divide a set of observations into four sections, each representing 25% of the observations. Quartiles are used to calculate the interquartile range, which is a measure of variability around the median.