final answers

(a) P126 (30,31,33,34,37)
Q.30:
Ans.:
81, 81, 86, 87, 89, 92, 93, 94, 95, 96, 97, 98, 98, 101, 101, 106
The minimum of the data is 81
The maximum of the data is 106
There are 16 data points. The median will be average of 8th and 9th data point.
Median = (94+95)/2 = 94.5
The first quartile is median of data to the left of median, average of 4th and 5th point = (87+89)/2 = 88
The third quartile is median of data to the right of median, average of 12th and 13th point = (98+98)/2 =
98
The box plot is given below:

Q.31.
Ans.:
The minimum of the data is 4
The maximum of the data is 63
There are 18 data points. The median will be average of 9th and 10th data point.
Median = (18+18)/2 = 18
The first quartile is median of data to the left of median, 5th point = 14
The third quartile is median of data to the right of median, 14th point = 32

The box plot:

Q.33.
Ans.:
Pulse rates of males:
First, we arrange the data in ascending order. There are total 40 points.
The minimum of the data is 46
The maximum of the data is 90
There are 40 data points. The median will be average of 20th and 21st data point.
Median = (66+68)/2 = 67
The first quartile is median of data to the left of median, average of 10th and 11th point = 60
The third quartile is median of data to the right of median, average of 30th and 31st point = 74
Pulse rates of females:
First, we arrange the data in ascending order. There are total 40 points.
The minimum of the data is 56
The maximum of the data is 104
There are 40 data points. The median will be average of 20th and 21st data point.
Median = (76+78)/2 = 77
The first quartile is median of data to the left of median, average of 10th and 11th point = 72
The third quartile is median of data to the right of median, average of 30th and 31st point = 82
Comparing the datasets from the boxplot, we can say that females have higher median pulse rate than
males. The first and third quartile values are also high for females. So, females have hi...