Question

which of the following is used to identify outliers in a set of data?
1.5(iqr)
1.5(range)
2(mean)
2(median)

Explanation:

In statistics, the inter - quartile range (IQR) is commonly used to identify outliers. The rule of thumb is to consider data points below $Q_1 - 1.5(IQR)$ or above $Q_3+1.5(IQR)$ as outliers, where $Q_1$ and $Q_3$ are the first and third quartiles respectively. The range, mean, and median are not used in this way to identify outliers.

Answer:

1.5(IQR)