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Find the mean deviation about the mean for the data.
| xi | 10 | 30 | 50 | 70 | 90 |
| fi | 4 | 24 | 28 | 16 | 8 |
Concept: undefined >> undefined
Find the mean deviation about the median for the data.
| xi | 5 | 7 | 9 | 10 | 12 | 15 |
| fi | 8 | 6 | 2 | 2 | 2 | 6 |
Concept: undefined >> undefined
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Find the mean deviation about the median for the data.
| xi | 15 | 21 | 27 | 30 | 35 |
| fi | 3 | 5 | 6 | 7 | 8 |
Concept: undefined >> undefined
Find the mean deviation about the mean for the data.
| Income per day in ₹ | Number of persons |
| 0-100 | 4 |
| 100-200 | 8 |
| 200-300 | 9 |
| 300-400 | 10 |
| 400-500 | 7 |
| 500-600 | 5 |
| 600-700 | 4 |
| 700-800 | 3 |
Concept: undefined >> undefined
Find the mean deviation about the mean for the data.
| Height in cms | Number of boys |
| 95 - 105 | 9 |
| 105 - 115 | 13 |
| 115 - 125 | 26 |
| 125 - 135 | 30 |
| 135 - 145 | 12 |
| 145 - 155 | 10 |
Concept: undefined >> undefined
Find the mean deviation about median for the following data:
| Marks | Number of girls |
| 0-10 | 6 |
| 10-20 | 8 |
| 20-30 | 14 |
| 30-40 | 16 |
| 40-50 | 4 |
| 50-60 | 2 |
Concept: undefined >> undefined
Calculate the mean deviation about median age for the age distribution of 100 persons given below:
| Age | Number |
| 16 - 20 | 5 |
| 21 - 25 | 6 |
| 26 - 30 | 12 |
| 31 - 35 | 14 |
| 36 - 40 | 26 |
| 41 - 45 | 12 |
| 46 - 50 | 16 |
| 51 - 55 | 9 |
Concept: undefined >> undefined
Which of the following sets are finite and which are infinite?
Set of concentric circles in a plane
Concept: undefined >> undefined
Which of the following sets are finite and which are infinite?
Set of letters of the English Alphabets
Concept: undefined >> undefined
Which of the following sets are finite and which are infinite?
{x ∈ N : x > 5}
Concept: undefined >> undefined
Which of the following sets are finite and which are infinite?
{x = ∈ N : x < 200}
Concept: undefined >> undefined
Which of the following sets are finite and which are infinite?
{x ∈ Z : x < 5};
Concept: undefined >> undefined
Which of the following sets are finite and which are infinite?
{x ∈ R : 0 < x < 1}.
Concept: undefined >> undefined
Compute:
(i)\[\frac{30!}{28!}\]
Concept: undefined >> undefined
Compute:
Concept: undefined >> undefined
Compute:
L.C.M. (6!, 7!, 8!)
Concept: undefined >> undefined
Prove that
Concept: undefined >> undefined
Which of the following statements are true? Give reason to support your answer.
(i) For any two sets A and B either \[A \subseteq B o\text{ or } B \subseteq A;\]
Concept: undefined >> undefined
In a class there are 27 boys and 14 girls. The teacher wants to select 1 boy and 1 girl to represent the class in a function. In how many ways can the teacher make this selection?
Concept: undefined >> undefined
Which of the following statements are true? Give reason to support your answer.
Every subset of an infinite set is infinite
Concept: undefined >> undefined
