Final answer:
The class midpoints for frequency distributions are found by averaging the lower and upper boundaries of each interval. For a class with boundaries 200 and 205, the midpoint would be 202.5. The same calculation applies to all other provided intervals.
Step-by-step explanation:
To identify the class midpoints for the given frequency distribution, you need to find the value that is halfway between the lower and upper boundaries of each interval. The midpoint is calculated by adding the lower boundary to the upper boundary and then dividing by 2. For example, if the class boundaries are 200 and 205, the midpoint would be (200 + 205) / 2 = 202.5.
Frequency Distribution Midpoints
- For the interval 200-205, the midpoint is 202.5.
- For the interval 205-210, the midpoint is 207.5.
- For the interval 210-215, the midpoint is 212.5.
- For the interval 215-220, the midpoint is 217.5.
- For the interval 220-225, the midpoint is 222.5.
- For the interval 225-230, the midpoint is 227.5.
- For the interval 230-235, the midpoint is 232.5.
The process is the same for the remaining sets of intervals provided. Simply calculate the midpoint for each by following the formula described above.