Examine the information in Table 2 and Figure 2, and see if you can answer the following questions:
- Which hemoglobin category contains the most observations?
- How many women had a hemoglobin between 12 and 13 g/dL?
- How many women had a hemoglobin greater than 12 g/dL?
- How many had a hemoglobin greater than 13 but less than 15 g/dL?
Answers: Category 12–14 had the most observations, and 35 women (25+9+1) had a hemoglobin count greater than 12. However, the information presented cannot answer questions 2 and 4.
You can see that grouping the information into categories can result in some information loss, but for most purposes, the benefits of readability outweigh the information lost.
