The pocket - expenses of Rahul during a week are :
Rs 15.40, Rs 18.00, Rs 16.50, Rs 14.75, Rs 12.60, and Rs 17.25
Find his mean pocket - expenses

Answer

To find the mean pocket expenses of Rahul during the week, we will follow these steps:

### Step 1: List the given expenses
The pocket expenses of Rahul for the week are:
- Rs 15.40
- Rs 18.00
- Rs 16.50
- Rs 14.75
- Rs 12.60
- Rs 17.25

### Step 2: Count the number of observations
We need to count how many expenses are listed.
- There are 6 expenses in total.

### Step 3: Calculate the sum of all expenses
Now, we will add all the expenses together:
- Sum = 15.40 + 18.00 + 16.50 + 14.75 + 12.60 + 17.25

Calculating the sum step by step:
1. 15.40 + 18.00 = 33.40
2. 33.40 + 16.50 = 49.90
3. 49.90 + 14.75 = 64.65
4. 64.65 + 12.60 = 77.25
5. 77.25 + 17.25 = 94.50

So, the total sum of expenses is Rs 94.50.

### Step 4: Use the mean formula
The formula for mean is:
\[ \text{Mean} = \frac{\text{Sum of all observations}}{\text{Number of observations}} \]

Substituting the values we have:
\[ \text{Mean} = \frac{94.50}{6} \]

### Step 5: Calculate the mean
Now, we will divide the total sum by the number of observations:
\[ \text{Mean} = 15.75 \]

### Final Answer
The mean pocket expenses of Rahul during the week is Rs 15.75.

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