CA maths solutions chapter 13 exercise Set C Statistical Description of Data
Statistical Description of Data CA foundation maths solutions chapter 14 Set C are given.
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You should practice all examples which are given i the textbook.
Chapter 1
Exercise Set C
Chapter 13 Exercise Set C Solutions CA maths
CA foundation maths solutions
Chapter 13 Exercise
Set C
Questions and solution
1. In a study about the male and female students of commerce and science departments of a college in 5 years, the following data were obtained :
After combining 1995 and 2000 if x denotes the ratio of female commerce student to female science student and y denotes the ratio of male commerce student to male science student, then
2. In a study relating to the labourers of a jute mill in West Bengal, the following information was collected. 20% of the total employees were females and 40% of them were married. 30 female workers were not members of Trade Union. Compared to this, out of 600 male workers 500 were members of Trade Union and 50% of the male workers were married. The unmarried non member male employees were 60 which formed 10% of the total male employees. The unmarried non members of the employees were 80. On the basis of this information the ratio of married male non members to the married female non members is
3. The weight of 50 students in pounds are given below : 82, 95, 120, 174, 179, 176, 159, 91, 85, 175, 88, 160, 97, 133, 159, 176, 151, 115, 105 172, 170, 128, 112, 101, 123, 117, 93, 117, 99, 90, 113, 119, 129, 134, 178, 105, 147, 107, 155, 157, 98. 117, 95, 135, 175, 97, 160, 168, 144, 175.
If they data are arranged in the form of a frequency distribution with class intervals as 81-100, 81-120, 121-140, 141-160 and 161–180 then the frequencies for these five class intervals are
Set C solutions Chapter 13 Statistical Description of Data CA maths
4. The following data delete to the marks of 48 students in statistics : 56, 10, 54, 38, 21, 43, 12, 22, 48, 51, 39, 26, 12, 17, 36, 19, 48, 36, 15, 33, 62, 57, 17, 5, 17, 45, 46, 43, 55, 57, 38, 43, 28, 32, 35, 54, 27, 17, 16, 11, 43, 45, 2, 16, 46, 28, 45. What are the frequency densities for the class intervals 30-39, 40- 49 and 50- 59.
5. The following information reletes to the age of death of 50 persons in an area : 36, 48, 50,45, 49, 31, 50, 48, 42, 57, 43, 40, 32, 41, 39, 39, 43, 47, 45, 52, 47, 48, 53, 37, 48, 50, 41, 49, 50, 53, 38, 41, 49, 45, 36, 39, 31, 48, 59, 48, 37, 49, 53, 51, 54, 59, 48, 38, 39, 45.
If the class intervals of 31-33, 34-36, 37- 39, … then the percentage frequencies for the last 5 class intervals are
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