Answer the questions as instructed .
Empirical formla of Mode = 3 Median - ……..

Answer

To solve the question regarding the empirical formula of mode, we need to fill in the blank in the equation:

**Empirical formula of Mode = 3 Median - ...**

### Step-by-Step Solution:

1. **Understand the relationship**: We start with the known relationship between mode, median, and mean. The empirical relationship is given as:
\[ \text{Mode} = 3 \times \text{Median} - k \times \text{Mean} \]
where \( k \) is a constant that we need to determine.

2. **Rearranging the formula**: From the video transcript, we see that the relationship can be rearranged to express mode in terms of median and mean:
\[ \text{Mode} = 3 \times \text{Median} - 2 \times \text{Mean} \]

3. **Identifying the blank**: Now we can fill in the blank in the original equation:
\[ \text{Empirical formula of Mode} = 3 \times \text{Median} - 2 \times \text{Mean} \]

4. **Final answer**: Therefore, the blank should be filled with \( 2 \times \text{Mean} \).

### Conclusion:
The complete empirical formula of mode is:
\[ \text{Mode} = 3 \times \text{Median} - 2 \times \text{Mean} \]