can adata have 2 medians ?

No the data can not have 2 medians.

Median is the middle value of the data. if the data has even no. of values then we find the two middle values and then add the two values and divide it by2.

for example:

3, 5, 7, 12, 13, 14, 21, 23, 23, 23, 23, 29, 40, 56

In this example the middle numbers are 21 and 23.

To find the value half-way between them, add them together and divide by 2:

21 + 23 = 44
44 ÷ 2 = 22

And, so, the Median in this example is 22.