Question

The table gives some information about the heights of 30 plants.
Height, h in cm
Frequency
0<h < 10
1
10 <h < 20
9
20 <h < 30
7
30 <h < 40
13
Which class interval contains the median?
Select your answer.
osh <10 10 sh< 20 20 sh < 30 30 sh<40
А
B
C
D​

Answer 1

Answer:

2,8,8

Step-by-step explanation:

Answer 2

The class interval 20 <h < 30  contains the median.

Median :

To find the interval in which median is lies, first we have to find the cumulative frequency.

The table is,

Height range                   frequency                     Cumulative frequency

0<h < 10                               1                                        1

10 <h < 20                            9                                        1 + 9 = 10

20 <h < 30                           7                                       10 + 7 = 17

30 <h < 40                           13                                       17 + 13 = 30

                                      Sum = 30

Since, the sum of frequency is even. So that the median is ,

                    $\frac{\frac{n}{2} th +(\frac{n}{2} +1)th}{2} =\frac{15th +16th}{2}$

From observing table, 15th and 16th term lies in cumulative frequency of 17.

Thus, the class interval 20 <h < 30  contains the median.

Learn more about the class interval here:

https://brainly.com/question/7587748