The histogram in the image you provided shows the frequency of data values grouped into classes. To find the frequency of the class containing the data value 10, we need to identify which bin this value falls into and then check the corresponding frequency.

From the histogram, it appears that the classes are grouped in intervals of 2 (e.g., 1-2, 3-4, etc.). The value 10 would fall into the class interval that includes 9-10. Looking at the bar corresponding to this class interval, the frequency (height of the bar) appears to be approximately 6.

Thus, the frequency of the class containing the data value 10 is 6.

Would you like more details on this analysis or do you have any further questions? Here are some related questions you might consider:

1. How are the class intervals determined in a histogram?
2. What does the shape of the histogram tell you about the distribution of the data?
3. What is the significance of the width of the bars in a histogram?
4. Can you predict the median data value from this histogram?
5. How would changing the class interval width affect the appearance of the histogram?

Tip: When analyzing histograms, consider the overall shape, central tendency, and spread of the data, as these characteristics can provide valuable insights into the dataset.