Step 2 of 5 : Find the upper class limit of the fourth class. Assume the scores are whole numbers.

Answer

1. Identify the classes from the histogram: The histogram displays scores grouped into numeric classes along the horizontal axis. The boundaries provided (70.5, 75.5, 80.5, 85.5, 90.5, 95.5, 100.5) represent class boundaries, which are usually halfway between the upper limit of one class and the lower limit of the next. 2. Locate the fourth class: Counting from left to right, the boundaries for the fourth class are 85.5 (lower boundary) and 90.5 (upper boundary). 3. Determine the upper class limit: Class limits are the actual values used to data entry. Since the scores are whole numbers, the upper class limit is the largest whole number that fits within the class boundary of 90.5. By standard convention for whole-number data, an upper boundary of 90.5 corresponds to an upper class limit of 90. Therefore, the upper class limit for the fourth class is 90.