Question

The haemoglobin levels in the blood of 45 hospital patients were measured. The results, correct to 1 decimal place, and ordered for convenience, are as follows. 9.1 10.1 10.7 10.7 10.9 11.3 11.3 11.4 11.4 11.4 11.6 11.8 12.0 12.1 12.3 12.4 12.7 12.9 13.1 13.2 13.4 13.5 13.5 13.6 13.7 13.8 13.8 14.0 14.2 14.2 14.2 14.6 14.6 14.8 14.8 15.0 15.0 15.0 15.1 15.4 15.6 15.7 16.2 16.3 16.9 (a) Form a grouped frequency table with eight classes. (b) Draw a histogram of the data.

          The haemoglobin levels in the blood of 45 hospital patients were measured. The results, correct to 1 decimal place, and ordered for convenience, are as follows.
9.1 10.1 10.7 10.7 10.9 11.3 11.3 11.4 11.4 11.4 11.6 11.8 12.0 12.1 12.3
12.4 12.7 12.9 13.1 13.2 13.4 13.5 13.5 13.6 13.7 13.8 13.8 14.0 14.2 14.2
14.2 14.6 14.6 14.8 14.8 15.0 15.0 15.0 15.1 15.4 15.6 15.7 16.2 16.3 16.9
(a) Form a grouped frequency table with eight classes.
(b) Draw a histogram of the data.

The haemoglobin levels in the blood of 45 hospital patients were measured. The results, correct to 1 decimal place, and ordered for convenience, are as follows.
9.1 10.1 10.7 10.7 10.9 11.3 11.3 11.4 11.4 11.4 11.6 11.8 12.0 12.1 12.3
12.4 12.7 12.9 13.1 13.2 13.4 13.5 13.5 13.6 13.7 13.8 13.8 14.0 14.2 14.2
14.2 14.6 14.6 14.8 14.8 15.0 15.0 15.0 15.1 15.4 15.6 15.7 16.2 16.3 16.9
(a) Form a grouped frequency table with eight classes.
(b) Draw a histogram of the data.

Added by Nicole A.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert T. L.

08/31/2022

Step 1

To find the range, subtract the smallest value from the largest value in the dataset. The smallest value is 9.1 and the largest value is 16.9. So, the range = 16.9 - 9.1 = 7.8. Step 2: Divide the range by the number of classes. The question specifies that we need Show more…

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The haemoglobin levels in the blood of 45 hospital patients were measured. The results, correct to 1 decimal place, and ordered for convenience, are as follows. 9.1 10.1 10.7 10.7 10.9 11.3 11.3 11.4 11.4 11.4 11.6 11.8 12.0 12.1 12.3 12.4 12.7 12.9 13.1 13.2 13.4 13.5 13.5 13.6 13.7 13.8 13.8 14.0 14.2 14.2 14.2 14.6 14.6 14.8 14.8 15.0 15.0 15.0 15.1 15.4 15.6 15.7 16.2 16.3 16.9 (a) Form a grouped frequency table with eight classes. (b) Draw a histogram of the data.