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Standard IX
Mathematics
Discrete Data
Sizes of shoe...
Question

Sizes of shoe are which types of variables?

A
discrete
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B
random
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C
continous
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D
nominal
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Solution

The correct option is A discrete
Sizes of the shoes are of the form : 6,7,8,9,10...
Thus, size of the shoes are a discrete variables.

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Question 37

The following bar graph represents the data for different sizes of shoes worn by the students in a school.

Read the graph and answer the following questions:
(a) Find the number of students whose shoes sizes have been collected.
(b) What is the number of students wearing shoe size 6?
(c) What are the different sizes of the shoes worn by the students?
(d) Which shoe size is worn by the maximum number of students?
(e) Which shoe size is worn by the minimum number of students?
(f) state whether true or false:
The total number of students wearing shoe sizes 5 and 8 are the same as the number of students wearing shoe size 6.

Q. In a shoe mart different sizes (in inches) of shoes sold in a week are; 7,9,10,8,7,9,7,9,6,3,5,5,7,10,7,8,7,9,6,7,7,7,10,5,4,3,5,7,8,7,9,7. Which size of the shoes must be kept more in number for next week to sell? Give the reasons
Q. In a shop, different sizes of shoes sold in a week are 7, 9, 8, 6, 7, 10, 6, 7, 8, 9, 11, 5, 6, 7, 8, 5, 9, 10, 9, 11, 12, 8, 3, 3, 5, 4, 6, 7, 4, 6, 7, 8, 8, 6, 9. What is the difference of the number between shoes sold of size 6 and size 7?
Q. In a shop, different sizes of shoes sold in a week are represented in an ungrouped frequency distribution table shown below.
Show size Frequency
(Shoes sold)
3 2
4 2
5 3
6 6
7 6
8 6
9 5
10 2
11 2
12 1

How many shoes of size 10 or less than 10 are sold out in a week?
Q. State, which of the following variables are continuous and which are discrete :

Sizes of shoes is discrete
If true then enter 1 and if false then enter 0

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