Final answer:
To find the approximate lower and upper class limits of the first class in a histogram, you look at the left and right boundaries of the first bar in the histogram.
Step-by-step explanation:
The question asks for the approximate lower class and upper class limits of the first class in the histogram. In a histogram, each class represents a range of data values. The lower class limit of a class is the smallest value included in that class, while the upper class limit is the largest value included in that class. To find the lower class limit of the first class, you look at the left boundary of the first bar in the histogram. To find the upper class limit, you look at the right boundary of the first bar.
For example, if the first class in the histogram spans from 10 to 20, then the approximate lower class limit would be 10 and the approximate upper class limit would be 20.