To calculate the sample mean and standard deviation of the savings amounts based on the frequency distribution, follow these steps:

Step 1: Calculate the Sample Mean

The sample mean $\bar{x}$ is calculated using the formula:

$\bar{x} = \frac{\sum (f_i \cdot x_i)}{n}$

Where:

• $f_i$ is the frequency of the $i$-th class.
• $x_i$ is the midpoint of the $i$-th class.
• $n$ is the total number of observations.

Step 2: Calculate the Standard Deviation

The standard deviation $s$ is calculated using the formula:

$s = \sqrt{\frac{\sum f_i \cdot (x_i - \bar{x})^2}{n - 1}}$

To proceed, I need the frequency distribution table that contains the class intervals and their corresponding frequencies. Could you please provide this data?