First, we need to find the median (Q2) of the data:
Arranging the data in ascending order:
44, 59, 60, 68, 70, 78, 79, 82, 94
Median (Q2) = (70 + 78) / 2 = 74
Next, we need to find the median (Q1) of the lower half of the data:
Lower half of the data: 44, 59, 60, 68, 70
Median (Q1) = (59 + 60) / 2 = 59.5
Finally, we need to find the median (Q3) of the upper half of the data:
Upper half of the data: 78, 79, 82, 94
Median (Q3) = (82 + 79) / 2 = 80.5
The interquartile range (IQR) is the difference between Q3 and Q1:
IQR = Q3 - Q1 = 80.5 - 59.5 = 21
Therefore, the interquartile range of the given data is 21.