requency Polygon without help of Histogram
To draw a frequency polygon with the help of given class intervals and frequency, first of all find the centre-point of each class interval, then indicate these point on x-axis with corresponding frequencies on y-axis. Now join the points according to parameters.
Direction (Example 10) Draw a frequency polygon with the given data.
Directions (Examples 11 -14) Given graph shows the yearly premium of an insurance company which is recovered for the insurance of Rs 1000 for different ages. Study the graph and answer the questions given below, ssc (10+2) 2012
11, Premium on Rs 10000 for the people of age 27 is
12. Two members of a family are of age 25 yr and 30 yr. What will be the premium for both of them for the insurance of Rs 10000 each?
(a) Rs 925
(b) Rs 910.60
(c) Rs 876.25
(d) Rs 885
13.If the person of age 28 yr is replaced by an another person of age 35 yr with an insurance of Rs 1000, then what will be per cent increase in the premium?
14. What will be the premium for a person of age 31 yr for the insurance of Rs 1000?
* The surface under the frequency polygon is exactly the same as the surface of the histogram i.e., it represents the same amount of data.
* Frequency polygon can be drawn with freehand. In frequency polygon, for any class, frequency of the unit class-interval is called frequency density.
Directions (Q.Nos. 1 -4) Study the table and answer the questions. ssc (10+2)2015
1.The number of years during which the company has its production less than the average production during 1920-1927 is approximately?
2. The average production of steel is
3. The difference of the production of steel in the year 1923 and 1924 is x% of 1927. Then, the value of xis approximately
4. The ratio of production of steel in the year 1924 and 1925 to that of 1923 and 1927 is
(a) 2005 : 2077
(b) 2205 : 2007
(c) 2205 : 2077
(d) 2077 : 2205
Directions (Q. NOS. 5-8) Study the graph and answer the questions. ssc (10+2) 2014
5. What was the pass percentage in year 2008?
6. What was the number of third division in year 2006?
7.In which year, did the college have the best result for B.Com.?
(c) Both (a) and (b)
8. How many per cent passed in first division in year 2007?
(a) 16 2/3
(b) 12 1/2
(c) 15 15/19
(d) 11 13/17
Directions (Q. Nos. 9-13) Study the graph carefully and answer the questions given below. SSC (10+2) 2014
9. Number of patients of age between 55 yr to 66 yr, who got admitted to the hospital on that day is
10. Total number of patients of age more than 55 yr, who got admitted to the hospital is
11. Number of patients of age more than 40 yr and less than 55 yr, who got admitted to the hospital on that day is
12. Percentage of patients of age less than 45 yr, who got admitted to the hospital on that day is approximately equal to
13. About 11% of the patients who got admitted to the hospital on that particular day were of age
(a) either between 35 yr and 40 yr or between 55 yr and 60 yr
(b) between 60 yr and 65 yr
(c) between 35 yr and 40 yr
(d) between 35 yr and 40 yr and between 55 yr and 60 yr
Directions (Q. NOS. 1-5) Study the following graph carefully to answer these questions.
1. Number of students in college B in.the year 2008 is what per cent of total number of students in college B in all the years together? (Round off to two digits after decimal.)
2. What is the average number of students in college A for all the years together?
3. What is the approximate percentage rise in the number of student of college B from 2005 to 2006?
4. For which colleges, and in which year was, the per cent rise in number of students from ‘the previous year the highest? ‘
(a) College A in 2004 and college B in 2005
(b) Only college B in 2004
(c) College A in 2004 anti college B in 2004
(d) College A in 2007 and college B in 2004
5. What is the ratio between the total number of students in college A in the year 2004, 2006 and 2007 together and-the, total number of students in college B in the year 2003, 2004 and 2008, respectively?
Directions (Q. Nos. 6-10) Study the following graph and answer the q