Correct Answer - Option 1 : 26, 24, 23

**Formula used: **

Mean = (Sum of all the observations)/Total number of observations.

Median = [(n/2)th term + {(n/2)+1}th term]/2 (For even number of terms).

Mode = The number whose frequency is highest.

The given data is 23, 34, 21, 30, 25, 23.

The chronological order of the numbers will be:

21, 23, 23, 25, 30, 34.

The total numbers of terms are 6.

Mean = (21 + 23 + 23 + 25 + 30 + 34)/6.

Mean = 156/6.

**Mean = 26.**

Median = [(6/2)^{th} term + {(6/2) + 1}^{th }term]/2.

Median = [3^{rd} term + 4^{th} term]/2.

Median = (23 + 25)/2.

Median = 48/2.

**Median = 24.**

**Mode:** As only 23 is repeated twice which is highest.

Therefore, the mode is 23.

Therefore, the mean, median and mode are 26, 24 and 23 respectively.

Hence, the correct answer is **"Option1: 26, 24, 23".**