If the total weight of 25 students is 625 kg, then mean weight of 25 students is ___________

Answer

To find the mean weight of the 25 students, we can follow these steps:

### Step 1: Understand the formula for mean
The mean (average) is calculated using the formula:
\[ \text{Mean} = \frac{\text{Sum of all observations}}{\text{Number of observations}} \]

### Step 2: Identify the total weight of the students
From the question, we know that the total weight of the 25 students is 625 kg. So, we have:
\[ \text{Sum of observations} = 625 \text{ kg} \]

### Step 3: Identify the number of observations
The number of observations in this case is the number of students, which is:
\[ \text{Number of observations} = 25 \]

### Step 4: Substitute the values into the mean formula
Now, we can substitute the values into the mean formula:
\[ \text{Mean} = \frac{625 \text{ kg}}{25} \]

### Step 5: Calculate the mean
Now, we perform the division:
\[ \text{Mean} = 25 \text{ kg} \]

### Final Answer
The mean weight of the 25 students is **25 kg**.

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