Advertisements
Advertisements
Question
Following figures relate to the weekly wages (in Rs) of 15 workers in a factory:
300, 250, 200, 250, 200, 150, 350, 200, 250, 200, 150, 300, 150, 200, 250
Prepare a frequency table.
(i) What is the range in wages (in Rs)?
(ii) How many workers are getting Rs 350?
(iii) How many workers are getting the minimum wages?
Solution
The frequency table for the number of accidents per day for a period of 30 days is given below:
Wage (in Rs) | Tally Marks | Frequency |
150 | ||| | 3 |
200 | 5 | |
250 | |||| | 4 |
300 | || | 2 |
350 | | | 1 |
(i) The range of wages (in Rs) is 350-150 i.e. 200.
(ii) From the frequency table, we can see that the number of workers earning Rs 350 is 1.
(iii) Here, the minimum wage is 150. Hence, the number of workers earning the minimum wage is 3.
APPEARS IN
RELATED QUESTIONS
Define the following term:
Class-interval
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?
Prepare a frequency table of the following scores obtained by 50 students in a test:
42, | 51, | 21, | 42, | 37, | 37, | 42, | 49, | 38, | 52, | 7, | 33, | 17, |
44, | 39, | 7, | 14, | 27, | 39, | 42, | 42, | 62, | 37, | 39, | 67, | 51, |
53, | 53, | 59, | 41, | 29, | 38, | 27, | 31, | 64, | 19, | 53, | 51, | 22, |
61, | 42, | 39, | 59, | 47, | 33, | 34, | 16, | 37, | 57, | 43, |
Prepare a frequency table of the following ages (in years) of 30 students of class VIII in your school:
13, 14, 13, 12, 14, 13, 14, 15, 13, 14, 13, 14, 16, 12, 14, 13, 14, 15, 16, 13, 14, 13, 12, 17, 13, 12, 13, 13, 13, 14
Construct a frequency distribution table for the following marks obtained by 25 students in a history test in class VIII of a school:
9, 17, 12, 20, 9, 18, 25, 17, 19, 9, 12, 9, 12, 18, 17, 19, 20, 25, 9, 12, 17, 19, 19, 20, 9
(i) What is the range of marks?
(ii) What is the highest mark?
(iii) Which mark is occurring more frequently?
Viji threw a die 30 times and noted down the result each time as follows. Prepare a table on the numbers shown using Tally Marks.
1 | 4 | 3 | 5 | 5 | 6 | 6 | 4 | 3 | 5 | 4 | 5 | 6 | 5 | 2 |
4 | 2 | 6 | 5 | 5 | 6 | 6 | 4 | 5 | 6 | 6 | 5 | 4 | 1 | 1 |
When the number of observations is large, the observations are usually organised in groups of equal width called ______.
Using tally marks, which one of the following represents the number eight:
In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.
8 | 1 | 3 | 7 | 6 | 5 | 5 | 4 | 4 | 2 |
4 | 9 | 5 | 3 | 7 | 1 | 6 | 5 | 2 | 7 |
7 | 3 | 8 | 4 | 2 | 8 | 9 | 5 | 8 | 6 |
7 | 4 | 5 | 6 | 9 | 6 | 4 | 4 | 6 | 6 |
How many students obtained marks below 4?
Following is the choice of sweets for 30 students of Class VI.
Ladoo, Barfi, Ladoo, Jalebi, Ladoo, Rasgulla, Jalebi, Ladoo, Barfi, Rasgulla, Ladoo, Jalebi, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Ladoo, Barfi, Rasgulla, Rasgulla, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo. |
Arrange the names of sweets in a table using tally marks.