Advertisements
Advertisements
Question
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, |
Solution
The frequency table of 50 students is given below:
Marks | Number of Students | Marks | Number of Students | Marks | Number of Students |
7 | 2 | 33 | 2 | 49 | 1 |
14 | 1 | 34 | 1 | 51 | 3 |
16 | 1 | 37 | 4 | 52 | 1 |
17 | 1 | 38 | 2 | 53 | 3 |
19 | 1 | 39 | 4 | 54 | 1 |
21 | 1 | 41 | 1 | 57 | 1 |
22 | 1 | 42 | 6 | 59 | 2 |
27 | 2 | 43 | 1 | 61 | 1 |
29 | 1 | 44 | 1 | 62 | 1 |
31 | 1 | 47 | 1 | 67 | 1 |
APPEARS IN
RELATED QUESTIONS
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 obtained by 40 students of class VIII in an examination are given below:
16, 17, 18, 3, 7, 23, 18, 13, 10, 21, 7, 1, 13, 21, 13, 15, 19, 24, 16, 3, 23, 5, 12, 18, 8, 12, 6, 8, 16, 5, 3, 5, 0, 7, 9, 12, 20, 10, 2, 23.
Divide the data into five groups, namely 0-5, 5-10, 10-15, 15-20 and 20-25 and prepare a grouped frequency table.
The following is the distribution of weights (in kg) of 52 persons:
Weight in kg | Persons |
30-40 | 10 |
40-50 | 15 |
50-60 | 17 |
60-70 | 6 |
70-80 | 4 |
(i) What is the lower limit of class 50-60?
(ii) Find the class marks of the classes 40-50, 50-60.
(iii) What is the class size?
The marks scored by 40 students of class VIII in mathematics are given below:
81, 55, 68, 79, 85, 43, 29, 68, 54, 73, 47, 35, 72, 64, 95, 44, 50, 77, 64, 35, 79, 52, 45, 54, 70, 83, 62, 64, 72, 92, 84, 76, 63, 43, 54, 38, 73, 68, 52, 54.
Prepare a frequency distribution with class size of 10 marks.
The heights (in cm) of 30 students of class VIII are given below:
155, 158, 154, 158, 160, 148, 149, 150, 153, 159, 161, 148, 157, 153, 157, 162, 159, 151, 154, 156, 152, 156, 160, 152, 147, 155, 163, 155, 157, 153.
Prepare a frequency distribution table with 160-164 as one of the class intervals.
The daily minimum temperatures in degrees Celsius recorded in a certain Arctic region are as follows:
−12.5, −10.8, −18.6, −8.4, −10.8, −4.2, −4.8, −6.7, −13.2, −11.8, −2.3, 1.2, 2.6, 0, −2.4, 0, 3.2, 2.7, 3.4, 0, −2.4, −2.4, 0, 3.2, 2.7, 3.4, 0, −2.4, −5.8, −8.9, −14.6, −12.3, −11.5, −7.8, −2.9
Represent them as frequency distribution table taking − 19.9 to − 15 as the first class interval.
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 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?
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.
Catherine threw a dice 40 times and noted the number appearing each time as shown below:
1 | 3 | 5 | 6 | 6 | 3 | 5 | 4 | 1 | 6 |
2 | 5 | 3 | 4 | 6 | 1 | 5 | 5 | 6 | 1 |
1 | 2 | 2 | 3 | 5 | 2 | 4 | 5 | 5 | 6 |
5 | 1 | 6 | 2 | 3 | 5 | 2 | 4 | 1 | 5 |
Make a table and enter the data using tally marks. Find the number that appeared.
Find those numbers that appear an equal number of times.