Frequency Polygon
Trending Questions
Q. Construct the class boundaries and less than cumulative frequency table for the given frequency distribution table. Also construct a less than frequency curve for the given data.
Class IntervalFrequency1−3104−6127−91510−121313−159
Class IntervalFrequency1−3104−6127−91510−121313−159
Q. Match the two columns
Column−IColumn−II(A) The class mark of the class interval(p) 13145−150 is(B) In a frequency distribution, the mid–value of a(q) 110class is 10 and width of each class is 6. The upperlimit of the class is(C) The mean of eight numbers is 40. If one(r) 22.5–27.5number is excluded, their mean becomes 30.The excluded number is(D) The class marks of a frequency distribution are(s) 147.515, 20, 25, 30, ……The class corresponding to the classmark 25 is
Choose the correct option:
Column−IColumn−II(A) The class mark of the class interval(p) 13145−150 is(B) In a frequency distribution, the mid–value of a(q) 110class is 10 and width of each class is 6. The upperlimit of the class is(C) The mean of eight numbers is 40. If one(r) 22.5–27.5number is excluded, their mean becomes 30.The excluded number is(D) The class marks of a frequency distribution are(s) 147.515, 20, 25, 30, ……The class corresponding to the classmark 25 is
Choose the correct option:
- A-p; B-s; C-q; D-r
- A-r; B-p; C-q; D-s
- A-s; B-p; C-r; D-q
- A-s; B-p; C-q; D-r
Q.
Histogram for continuous frequency distribution having unequal class intervals cannot be plotted.
- True
- False
Q. Raj Kumar Das professes to sell his goods at cost price. But he uses a false weight and thus gains 25%. For a kg, he uses a weight of
- 700gm
- 850gm
- 800gm
- 900gm
Q. 45 students across the different levels of Intelligent Quotient are distributed in the grouped table given below.
Draw the frequency polygon for the data.
| IQ | 60-70 | 70-80 | 80-90 | 90-100 | 100-110 | 110-120 | 120-130 |
| No. of patients | 3 | 6 | 9 | 11 | 11 | 7 | 2 |
Draw the frequency polygon for the data.
Q. By taking classes 30−40, 40−50, 50−60, ..., construct a frequency table for the following data:
65, 34, 74, 49, 52, 35, 71, 55, 61, 40, 56, 38, 52, 56, 52, 33, 60, 35, 49, 37, 53, 50, 44, 30, 62, 50, 47, 45, 47, 50, 63, 61, 54, 58, 47, 64, 37, 38, 44, 42, 47, 55, 70, 33, 75, 49, 47, 30, 60, 69
Also, construct a combined histogram and frequency polygon for the distribution.
65, 34, 74, 49, 52, 35, 71, 55, 61, 40, 56, 38, 52, 56, 52, 33, 60, 35, 49, 37, 53, 50, 44, 30, 62, 50, 47, 45, 47, 50, 63, 61, 54, 58, 47, 64, 37, 38, 44, 42, 47, 55, 70, 33, 75, 49, 47, 30, 60, 69
Also, construct a combined histogram and frequency polygon for the distribution.
Q. Fill in the Blanks
Question 11
___ ___ ___ displays data that changes continuously over period of time.
Question 11
Q.
Make a frequency polygon from the given data.
Weight (kg)Number Of Students35.5−40.5540.5−45.5245.5−50.51250.5−55.5255.5−60.545
[4 MARKS]
Q. Look at the histogram and answer the following .
How many workers earn more than Rs. 850?
- 8
- 7
- 9
- 10
Q. The following pie chart gives the information about favourite spaceships of Nix’s crew of 120 members. Answer the following questions based on the given pie chart.
(i) Which spaceship is liked the most and how many members liked it?
(ii) Which spaceships is liked the least and what fraction of 360°is it representing?
(i) Which spaceship is liked the most and how many members liked it?
(ii) Which spaceships is liked the least and what fraction of 360°is it representing?
Q. Three vrtices of a parallogram are (1, 2, 1), (2, 5, 6)&(1, 6, 0). Find the coordinate of the fourth vertex
Q. The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, in which subject did the student score 105 marks?
