GRADE 09 MATHEMATICS TERM 3 PRE TEST 8.2. Determine the following 8.2.1. 8.2.2. 8.2.3. 8.3. Use the following table to draw the histogram graph. QUESTION 9: PROBABILITY 9.1. A coin is tossed and a dice is rolled.

From the previous question, the heights in ascending order are:
$132, 132, 141, 142, 155, 156, 161, 162, 163, 169, 170, 172$.

There are 12 heights, so $n = 12$.

Since $n$ is an even number, the median is the average of the two middle values. These are the $(\frac{n}{2})^{th}$ and $(\frac{n}{2} + 1)^{th}$ values.
The $(\frac{12}{2})^{th}$ value is the $6^{th}$ value, which is 156.
The $(\frac{12}{2} + 1)^{th}$ value is the $7^{th}$ value, which is 161.

The median height is $\text{158.5 cm}$.