students below selected plus 0.5 multiplied by students equal to selected divided by total number of students. multiply answer by 100
Chat with our AI personalities
Fran's rank score is for 1 test. Kelly's rank is the CLASS rank. That means that Kelly is # 60 in a class of 500. Or, if you simplify, she is #12 in a class of 100. Fran's percentile rank on the exam was 85%, or 85 out of 100. Therefore, there are 15 percentile points that other people got higher than Fran's score. But there are only 11 people ahead of Kelly. Therefore, Kelly is ranked higher.
b-a/6
Sales rank is a quantitative variable. The underlying value is sales, obviously a quantitative value. The median, minimum, maximum and percentile values are all quantitative statistics based on the ranking of data.
You find the semi interquartile range by subtracting the 25th percentile (Q1) from the 75th (Q3) percentile and dividing by 2. So, the formula looks like : (Q3 - Q1)/2
percentile