Question

Number of readers in a library are given below. Write the frequency of respective classes. Also write the less than cumulative fequency table.Number of books 1-10 11-20 21-30 31-40 41-50Greater than Cumulative frequency 42 36 23 14 6

Answer 1

Answer:

frequency of respective classes for readers in a library

Step-by-step explanation:

Class    Greater than Cumulative frequency

1-10           42

11-20         36

21-30        23

31-40        14

41-50        6

Class      Frequency  

1-10           6       (42 - 36)

11-20         13      (36 - 23)

21-30        9        (23 - 14)

31-40        8        (14 - 6)

41-50        6

Class    Less than Cumulative frequency

1-10           6      

11-20         19       (6 + 13)

21-30        28       (19 + 9)

31-40        36        (28 + 8)

41-50        42        (36 + 6)

Answer 2

we can see class interval are non continuous ,so we are going to make class interval.as continuous

no. of book less then c.f

0.5 _ 10.5. 3

10.5_20.5. 8

20.5_30.5. 19

30.5_40.5. 25

40.5_50.5. 30

Now we are going to form less the cumulative frequency table

no. of book LCF

less than 10.5 3

less than 20.5. 8

less than 30.5. 19

less than 40.5. 25

less than 50.5. 30