STATISTICAL TECHNIQUES AND TOOLS
MEASURES OF CENTER AND SPREAD
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A data value x is an outlier if if:x < Q 1-1.5(IQR) or if:x > Q 3 + 1.5(IQR).
|
|
Depends on the data size
|
|
|
Sometimes true
|
|
|
Always true
|
|
|
False
|
Explanation:
Detailed explanation-1: -When scale is taken as 1.5, then according to IQR Method any data which lies beyond 2.7 from the mean (), on either side, shall be considered as outlier. And this decision range is the closest to what Gaussian Distribution tells us, i.e., 3.
Detailed explanation-2: -Sort your data from low to high. Identify the first quartile (Q1), the median, and the third quartile (Q3). Calculate your IQR = Q3 – Q1. Calculate your upper fence = Q3 + (1.5 * IQR) Calculate your lower fence = Q1 – (1.5 * IQR) More items •30-Nov-2021
There is 1 question to complete.