EASY
Deciles divide a data set into how many equal parts?
10
In using the formula to find position in deciles, what does k represent?
Number of position
Given this data: 50, 52, 55, 58, 60, 62, 65, 67, 70, 72. What is D3?
55.9
The 5th decile is the same as what measure of position?
Median
In an ordered list of 20 data values, what is the position of D4?
8.4th position
A student ranks 45th out of 50. What decile are they in?
9th decile
True or False: The 1st decile (D1) represents the top 10% of a data set.
False
It represents the lowest 10%
If your score is in D9, what percentage of people scored below you?
90%
If D6 is at position 12.6 and 12th and 13th scores are 70 and 72, find the interpolated D6 value.
70+0.6(72-70)
= 71.2