Question

1. what would be the upper limit for a dataset with q3 = 50 and iqr = 20 to determine outliers?

a. 90
b. 80
c. 70
d. 60

Explanation:

Step1: Recall the formula for upper limit

The formula to find the upper limit for outliers using IQR (Interquartile Range) is \( \text{Upper Limit} = Q3 + 1.5 \times \text{IQR} \).

Step2: Substitute the given values

We know that \( Q3 = 50 \) and \( \text{IQR} = 20 \). Substituting these values into the formula:
\( \text{Upper Limit} = 50 + 1.5\times20 \)
First, calculate \( 1.5\times20 = 30 \). Then, add this to 50: \( 50 + 30 = 80 \).

Answer:

b. 80