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प्रश्न
Define the following term:
Class-interval
उत्तर
Class interval is the width of such a class.
APPEARS IN
संबंधित प्रश्न
Define the following term:
Observations
The following list tells colours liked by 25 students. Prepare a table using Tally Marks.
| Red | Blue | White | Grey | White |
| Green | Grey | Blue | Green | Grey |
| Blue | Grey | Red | Green | Red |
| Blue | Blue | Green | Blue | Green |
| Grey | Grey | Green | Grey | Red |
The table shows the number of calls recorded by a Fire Service Station in one year.
| Types of Calls | Tally Marks | Frequency |
| Building Fires | |||| | | |
| Other Fires | |||| |||| | | |
| Hazardous Materials | 7 | |
| Rescues | 4 | |
| False Alarms | |||| || | |
| Total | ||
Complete the table and answer the following questions.
(i) Which type of call was recorded the most?
(ii) Which type of call was recorded the least?
(iii) How many calls were recorded in all?
(iv) How many calls were recorded as False Alarms?
The tally marks |||| |||| represents the number count
Data available in an unorganised form is called ______ data.
According to data of question 4, which fruit is liked by most of the students?
The number of two wheelers owned individually by each of 50 families are listed below. Make a table using tally marks.
1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 0, 1, 1, 2, 3, 1, 2, 1, 1, 2, 1, 2, 3, 1, 0, 2, 1, 0, 2, 1, 2, 1, 2, 1, 1, 4, 1, 3, 1, 1, 2, 1, 1, 1, 1, 2, 3, 2, 1, 1
Find the number of families having two or more, two wheelers.
The lengths in centimetres (to the nearest centimetre) of 30 carrots are given as follows:
15, 22, 21, 20, 22,15, 15, 20, 20,15, 20, 18, 20, 22, 21,
20, 21, 18, 21, 18, 20, 18, 21, 18, 22, 20, 15, 21, 18, 20
Arrange the data given above in a table using tally marks and answer the following questions.
(a) What is the number of carrots which have length more than 20 cm?
(b) Which length of the carrots occur maximum number of times? Minimum number of times?
Thirty students were interviewed to find out what they want to be in future. Their responses are listed as below:
doctor, engineer, doctor, pilot, officer, doctor, engineer, doctor, pilot, officer, pilot, engineer, officer, pilot, doctor, engineer, pilot, officer, doctor, officer, doctor, pilot, engineer, doctor, pilot, officer, doctor, pilot, doctor, engineer
Arrange the data in a table using tally marks.
Fill in the blanks in the following table which represents shirt size of 40 students of a school.
| Shirt size | Tally Marks | Number of students |
| 30 | ||| | 3 |
| 32 | `cancel(bb|bb|bb|bb|)` | ______ |
| 34 | ______ | 8 |
| 36 | `cancel(bb|bb|bb|bb|)` || | ______ |
| 38 | `cancel(bb|bb|bb|bb|)` ______ | 10 |
| 40 | ______ | 7 |
