Statistics Test

Result

Statistics Test - 21

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Weekly Quiz Competition

Question 1
1 / -0

The class mark of the class intervaI $$40-50$$ is _____.

A
$$40$$

B
$$45$$

C
$$50$$

D
Data insufficient

Solution

The number in the middle of the class is called class mark.
i.e, $$45$$
Question 2
1 / -0

Directions For Questions

Study the following frequency table and choose the appropriate answer :
Class Intervals Frequency
$$0-10$$ $$6$$
$$10-20$$ $$2$$
$$20-30$$ $$13$$
$$30-40$$ $$17$$
$$40-50$$ $$11$$
$$50-60$$ $$4$$
$$60-70$$ $$8$$
$$70-80$$ $$7$$

...view full instructions

The class interval having highest frequency is:

A
$$30-40$$

B
$$50-60$$

C
$$20-30$$

D
$$40-50$$

Solution

From the given table, the highest frequency is $$17$$
The highest frequency belongs to the class interval $$30-40$$
Question 3
1 / -0

The lower limit of class interval $$0-5$$ is _____ and upper limit is _____.

A
$$0, 5$$

B
$$0.1, 4.9$$

C
$$2.5, 2.5$$

D
None of these

Solution

Class interval is defined as "Lower Limit" - "Upper Limit"
The lower limit of class interval $$0-5$$ is $$0$$ land upper limit is $$5$$
Question 4
1 / -0

Directions For Questions

Study the following frequency table and choose the appropriate answer :
Class Intervals Frequency
$$0-10$$ $$6$$
$$10-20$$ $$2$$
$$20-30$$ $$13$$
$$30-40$$ $$17$$
$$40-50$$ $$11$$
$$50-60$$ $$4$$
$$60-70$$ $$8$$
$$70-80$$ $$7$$

...view full instructions

The lower limit of class having lowest frequency is:

A
$$0$$

B
$$50$$

C
$$10$$

D
None of these

Solution

The class having lowest frequency is $$10-20$$.
The lower limit of class having lowest frequency is $$10$$.
Question 5
1 / -0

The number of times a particular item occurs in a class interval is called its

A
mean

B
frequency

C
cumulative frequency

D
none of these

Solution

The number of times a particular item occurs in a class interval is called its frequency.

For ex.$$1,2,3,4,3,5,3,6$$ in the given data $$'3'$$ appear $$3$$ times so the frequency of $$3$$ is $$3$$.
Question 6
1 / -0

Mean of 10 values is 32.6. If another values is included the mean becomes 31. The included value is

A
$$16$$

B
$$14$$

C
$$15$$

D
$$19$$

Solution

Included value $$\displaystyle =31\times 11-32.6\times 10=15$$
Question 7
1 / -0

Upper limit of class interval $$75 - 85$$ is:

A
$$10$$

B
$$-10$$

C
$$75$$

D
$$85$$

Solution

The upper value of a class interval is called the upper limit of the class.
Hence, 75 is the lower limit, 85 is the upper limit
Question 8
1 / -0

Directions For Questions

Class interval $$0-10$$ $$10-20$$ $$20-30$$ $$30-40$$ $$40-50$$ total
Frequency $$1$$ $$6$$ $$20$$ $$12$$ $$6$$ $$45$$

...view full instructions

Which two class has same frequency ?

A
$$0-10$$ & $$10-20$$

B
$$10-20$$ & $$40-50$$

C
both

D
none of this
Question 9
1 / -0

Directions For Questions

Class interval $$0-10$$ $$10-20$$ $$20-30$$ $$30-40$$ $$40-50$$ total
Frequency $$1$$ $$6$$ $$20$$ $$12$$ $$6$$ $$45$$

...view full instructions

Which class has lowest frequency ?

A
$$0-10$$

B
$$10-20$$

C
$$20-30$$

D
$$30-40$$

Solution

Class 0−10 has lowest frequency i.e. $$1$$.
Question 10
1 / -0

The difference between upper and lower limit is called

A
group

B
class marks

C
class size

D
class internal

Solution

Class size = Upper Limit- Lower limit

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Re-Attempt Weekly Quiz Competition

Class Intervals	Frequency
$$0-10$$	$$6$$
$$10-20$$	$$2$$
$$20-30$$	$$13$$
$$30-40$$	$$17$$
$$40-50$$	$$11$$
$$50-60$$	$$4$$
$$60-70$$	$$8$$
$$70-80$$	$$7$$

Class interval	$$0-10$$	$$10-20$$	$$20-30$$	$$30-40$$	$$40-50$$	total
Frequency	$$1$$	$$6$$	$$20$$	$$12$$	$$6$$	$$45$$

Statistics Test - 21

Result

Statistics Test - 21

Score

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Rank

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SHARING IS CARING

Question 1

$$40$$

$$45$$

$$50$$

Data insufficient

Solution

Question 2

$$30-40$$

$$50-60$$

$$20-30$$

$$40-50$$

Solution

Question 3

$$0, 5$$

$$0.1, 4.9$$

$$2.5, 2.5$$

None of these

Solution

Question 4

$$0$$

$$50$$

$$10$$

None of these

Solution

Question 5

mean

frequency

cumulative frequency

none of these

Solution

Question 6

$$16$$

$$14$$

$$15$$

$$19$$

Solution

Question 7

$$10$$

$$-10$$

$$75$$

$$85$$

Solution

Question 8

$$0-10$$ & $$10-20$$

$$10-20$$ & $$40-50$$

both

none of this

Question 9

$$0-10$$

$$10-20$$

$$20-30$$

$$30-40$$

Solution

Question 10

group

class marks

class size

class internal

Solution

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