Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

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Solution

(ii) Preparing Tally Marks

Class Intervals

Tally Marks

Frequency

1000 – 1500

20

1500 – 2000

13

2000 – 2500

06

2500 – 3000

05

3000 – 3500

02

3500 – 4000

01

4000 – 4500

02

4500 – 5000

–

00

5000 – 5500

01

Total

50

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Similar questions

Q. Use the data in Table 3.2 that relate to monthly household expenditure (in Rs) on food of 50 households and

(i) Obtain the range of monthly household expenditure on food.

(ii) Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

(ii) Find the number of households whose monthly expenditure on food is

(a) less than Rs 2000
(b) more than Rs 3000
(c) between Rs 1500 and Rs 2500

Use the data given below that relate to monthly household expenditure (in Rs) on food of 50 households and answer the questions.

$\begin{matrix} 1904 & 1559 & 1735 & 2760 & 2041 & 1612 1753 & 1855 & 4439 & 5090 & 1085 & 1823 & 2346 1523 & 1211 & 1360 & 1110 & 2152 & 1183 & 1218 1315 & 1105 & 2628 & 2712 & 4248 & 1812 & 1264 1183 & 1171 & 1007 & 1180 & 1953 & 1137 & 2048 2025 & 1583 & 1324 & 2621 & 3676 & 1397 & 1832 1962 & 2177 & 2575 & 1293 & 1365 & 1146 & 3222 1396 \end{matrix}$

(i) Obtain the range of monthly household expenditure on food.

(ii) Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

From the following data relating to weights of 40 students in kg

138, 164, 150, 131, 144, 125, 149, 157, 146, 148,

140, 147, 136, 148, 152, 144, 168, 126, 138, 176,

163, 119, 150, 165, 146, 173, 142, 147, 135, 153,

142, 135, 140, 135, 161, 145, 150, 156, 145, 128

(i) Obtain the range of weights of the students.

(ii) Divide the range into appropriate number of class-interval and obtain the frequency distribution.

(iii) Find the number of students whose weight is

(a) less than 145 kg

(b) more than 155 kg

Q. The class intervals in a frequency distribution are:
40 – 44, 45 – 49, 50 – 54,........ If the frequency distribution, is converted into a continuous frequency distribution then the class intervals are _________.

The classes in a frequency distribution range from 110 to 170 with class interval being 10.

What is the Mid value of this Class Distribution?

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Class Intervals	Tally Marks	Frequency
1000 – 1500		20
1500 – 2000		13
2000 – 2500		06
2500 – 3000		05
3000 – 3500		02
3500 – 4000		01
4000 – 4500		02
4500 – 5000	–	00
5000 – 5500		01
Total		50

Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

(ii) Preparing Tally Marks Class Intervals Tally Marks Frequency 1000 – 1500 20 1500 – 2000 13 2000 – 2500 06 2500 – 3000 05 3000 – 3500 02 3500 – 4000 01 4000 – 4500 02 4500 – 5000 – 00 5000 – 5500 01 Total 50

(ii) Preparing Tally Marks

Class Intervals

Tally Marks

Frequency

1000 – 1500

20

1500 – 2000

13

2000 – 2500

06

2500 – 3000

05

3000 – 3500

02

3500 – 4000

01

4000 – 4500

02

4500 – 5000

–

00

5000 – 5500

01

Total

50