It looks like the image you uploaded contains a table with frequency data, and there are some red "X" marks in the table. These red "X" marks likely indicate incorrect or missing values that need to be corrected.

Let's break it down step by step:

1. The table lists data with classes (intervals), frequency, and midpoints for each class.
2. The red "X" marks indicate areas where values may be missing or incorrect. Based on the image, it looks like the table is trying to calculate midpoints, frequencies, or cumulative frequencies.

I can help you correct the red "X" values. Could you specify exactly which values you're concerned about (e.g., midpoints, frequencies)? If you'd like, I can walk through the process of correcting them.