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Answer the following :
Following data gives no. of goals scored by a team in 100 matches. Compute the standard deviation
| No. of Goals Scored | 0 | 1 | 2 | 3 | 4 | 5 |
| No. of matches | 5 | 20 | 25 | 15 | 20 | 5 |
Concept: undefined >> undefined
Answer the following :
Compute the variance and S.D. for the following data:
| X | 62 | 30 | 64 | 47 | 63 | 46 | 35 | 28 | 60 |
| F | 5 | 8 | 3 | 4 | 5 | 7 | 8 | 3 | 7 |
Concept: undefined >> undefined
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Answer the following :
Given below is the frequency distribution of marks obtained by 100 students. Compute arithmetic mean and S.D.
| Marks | 40 - 49 | 50 - 59 | 60 - 69 | 70 - 79 | 80 - 89 | 90 - 99 |
| No. of students | 4 | 12 | 25 | 28 | 26 | 5 |
Concept: undefined >> undefined
From a pack of well-shuffled cards, two cards are drawn at random. Find the probability that both the cards are diamonds when first card drawn is kept aside
Concept: undefined >> undefined
From a pack of well-shuffled cards, two cards are drawn at random. Find the probability that both the cards are diamonds when the first card drawn is replaced in the pack
Concept: undefined >> undefined
Three fair coins are tossed. What is the probability of getting three heads given that at least two coins show heads?
Concept: undefined >> undefined
Two cards are drawn one after the other from a pack of 52 cards without replacement. What is the probability that both the cards drawn are face cards?
Concept: undefined >> undefined
Select the correct option from the given alternatives :
Bag I contains 3 red and 4 black balls while another Bag II contains 5 red and 6 black balls. One ball is drawn at random from one of the bags and it is found to be red. The probability that it was drawn from Bag II
Concept: undefined >> undefined
Solve the following quadratic equation.
8x2 + 2x + 1 = 0
Concept: undefined >> undefined
Solve the following quadratic equation
`2x^2 - sqrt(3)x + 1` = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
3x2 − 7x + 5 = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
x2 − 4x + 13 = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
x2 + 3ix + 10 = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
2x2 + 3ix + 2 = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
x2 + 4ix − 4 = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
ix2 − 4x − 4i = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
x2 − (2 + i)x − (1 − 7i) = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
`x^2 - (3 sqrt (2) +2 i) x + 6 sqrt (2) i` = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
x2 − (5 − i) x + (18 + i) = 0
Concept: undefined >> undefined
Solve the following quadratic equation.
(2 + i)x2 − (5 − i) x + 2(1 − i) = 0
Concept: undefined >> undefined
