Mean of 130,126,68,50,1 =?

Answer

To find the mean of the given data set, we will follow these steps:

### Step 1: Identify the data set
The given data set is:
\[ 130, 126, 68, 50, 1 \]

### Step 2: Count the number of terms (n)
We need to find the total number of terms in the data set.
Here, the number of terms \( n \) is:
\[ n = 5 \]

### Step 3: Calculate the sum of the data
Next, we will calculate the sum of all the numbers in the data set:
\[ \text{Sum} = 130 + 126 + 68 + 50 + 1 \]

Calculating the sum:
\[ 130 + 126 = 256 \]
\[ 256 + 68 = 324 \]
\[ 324 + 50 = 374 \]
\[ 374 + 1 = 375 \]
So, the total sum is:
\[ \text{Sum} = 375 \]

### Step 4: Calculate the mean
Now, we will calculate the mean using the formula:
\[ \text{Mean} (\bar{x}) = \frac{\text{Sum of data}}{n} \]
Substituting the values we found:
\[ \bar{x} = \frac{375}{5} \]

Calculating the mean:
\[ \bar{x} = 75 \]

### Final Answer
The mean of the given data set is:
\[ \text{Mean} = 75 \]