Answer:
To find the median of a distribution, you need to arrange the data in ascending order.
First, let's arrange the heights in ascending order:
140, 142, 145, 148, 150, 152, 156
Next, count the total number of students:
3 + 5 + 7 + 13 + 9 + 8 + 5 = 50
Since there is an even number of data points (50 is even), the median is the average of the two middle values.
In this case, the two middle values are the 25th and 26th values, which are 148 and 150.
To find the average, add the two middle values and divide by 2:
(148 + 150) / 2 = 298 / 2 = 149
Therefore, the median of the distribution is 149 cm.
Step-by-step explanation: