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The problem displayed involves determining the **mean** and **standard deviation** for a **grouped frequency distribution** of household temperature data. Here's how we can solve it step by step:

1. **Class Midpoint Calculation**:
   - For each class, the midpoint is calculated by taking the average of the lower and upper limits of each class.
   
   Midpoints provided:
   - \( \text{Class } 61-64: \ 63.0 \)
   - \( \text{Class } 65-67: \ 66.0 \)
   - \( \text{Class } 68-69: \ 69.0 \)
   - \( \text{Class } 70: \ 70.0 \)
   - \( \text{Class } 71-72: \ 72.0 \)
  

Determine the mean and standard deviation for a grouped frequency distribution of daytime household temperature data using the provided class midpoints and frequencies.

Learn how to calculate the mean and standard deviation for a grouped frequency distribution of household temperature data. This problem uses midpoints for classes like 61-64°F, 65-67°F, and frequencies to calculate key statistical values. Suitable for Grades 10-12 students.

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