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प्रश्न
In a study of number of accidents per day, the observations for 30 days were obtained as follows:
| 6, | 3, | 5, | 6, | 4, | 3, | 2, | 5, | 4, | 2, | 4, | 2, | 1, | 2, | 2, |
| 0, | 5, | 4, | 6, | 1, | 6, | 0, | 5, | 3, | 6, | 1, | 5, | 5, | 2, | 6 |
Prepare a frequency distribution table.
उत्तर
The frequency table for the number of accidents per day for a period of 30 days is given below:
| Number of Accidents | Tally Marks | Frequency |
| 0 | || | 2 |
| 1 | ||| | 3 |
| 2 | 6 | |
| 3 | ||| | 3 |
| 4 | |||| | 4 |
| 5 | 6 | |
| 6 | 6 |
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संबंधित प्रश्न
Define the following term:
Discrete frequency distribution
The final mark in mathematic of 30 student are as follow:
| 53, | 61, | 48, | 60, | 78, | 68, | 55, | 100, | 67, | 90, | 75, | 88, | 77, | 37, | 84, |
| 58, | 60, | 48, | 62, | 56, | 44, | 58, | 52, | 64, | 98, | 59, | 70, | 39, | 50, | 60 |
Arrange these marks in the ascending order, 30 to 39 one group, 40 to 49 second group etc.
Now answer the following:
(ii) What is the highest score?
(iii) What is the lowest score?
(iv) What is the range?
(v) If 40 is the pass mark how many have failed?
(vi) How many have scored 75 or more?
(vii) Which observations between 50 and 60 have not actually appeared?
(viii) How many have scored less than 50?
A die was thrown 25 times and following scores were obtained:
| 1, | 5, | 2, | 4, | 3, | 6, | 1, | 4, | 2, | 5, | 1, | 6, | 2, |
| 6, | 3, | 5, | 4, | 1, | 3, | 2, | 3, | 6, | 1, | 5, | 2, |
Prepare a frequency table of the scores.
The marks scored by 20 students in a test are given below:
54, 42, 68, 56, 62, 71, 78, 51, 72, 53, 44, 58, 47, 64, 41, 57, 89, 53, 84, 57.
Complete the following frequency table:
| (Marks in class intervals) | Tally marks | Frequency (no. of children) |
| 40 - 50 | ||
| 50 - 60 | ||
| 60 - 70 | ||
| 70 - 80 | ||
| 80 - 90 |
What is the class interval in which the greatest frequency occurs?
The following are the marks obtained by 30 students in a class test out of 20 in Mathematics subject.
| 11 | 12 | 13 | 12 | 12 | 15 | 16 | 17 | 18 | 12 |
| 20 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 |
| 16 | 16 | 16 | 15 | 14 | 13 | 12 | 11 | 19 | 17 |
Prepare a table using Tally Marks
The tally marks for the number 7 in standard form is _____________
Sumita stood on the road for half an hour and counted the number of vehicles passing by. She made a tally mark for each vehicle. This helped her in counting the total number of vehicles in each group.
- Write the number of each vehicle in the table.
- How many vehicles in all did Sumita see on the road in half an hour?
- Auto rickshaws are thrice the number of trucks — true/false?
- Make tally marks for 7 more buses and 2 more trucks.
The choices of the fruits of 42 students in a class are as follows:
A, O, B, M, A, G, B, G, A, G, B, M, A, G, M, A, B, G, M, B, A, O, M, O, G, B, O, M, G, A, A, B, M, O, M, G, B, A, M, O, M, O, where A, B, G, M and O stand for the fruits Apple, Banana, Grapes, Mango and Orange respectively. Which two fruits are liked by an equal number of students?
An observation occurring seven times in a data is represented as ______ using tally marks.
In an examination, the grades achieved by 30 students of a class are given below. Arrange these grades in a table using tally marks:
B, C, C, E, A, C, B, B, D, D, D, D, B, C, C, C, A, C, B, E, A, D, C, B, E, C, B, E, C, D
