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Mean = 2.

Variance = 1.

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Q: When a coin is tossed four time then mean and variance of the number of the head?
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Related questions

If coin tossed four times what are the possibilities to get head or tail?

2


What is the probability of a coin tossed five times to get four heads?

It is 5/32 = 0.15625


When a quarter is tossed four times How many times are exactly three tails tossed?

Out of the 16 possible outcomes for a coin tossed four times, 4 of them result in 3 Tails & 1 Head. They are: TTTH, TTHT, THTT, and HTTT.


What is the probability of tossing at least three heads if a fair coin is tossed four times?

It is 0.3125


A coin is tossed four times What is the probability of getting 4 heads in a row?

It is 1/16.


What is the probability of getting three tails and a head when a coin is tossed four times?

The probability is 1/4


How many different combinations are possible if a coin is tossed twice and a number cube is tossed once?

18 different combinations. When a coin is tossed twice there are four possible outcomes, (H,H), (H,T), (T,H) and (T,T) considering the order in which they appear (first or second). But if we are talking of combinations of the two individual events, then the order in which they come out is not considered. So for this case the number of combinations is three: (H,H), (H,T) and (T,T). For the case of tossing a die once there are six possible events. The number of different combinations when tossing a coin twice and a die once is: 3x6 = 18 different combinations.


In four successive tosses a fair coin lands heads up each time What is likely to happen when the coin is tossed a fifth time?

The odds of each coin toss are 50-50. The coin has no memory; there is no record of what the last four tosses are. EVERY toss is at 50-50 odds.


What is the variance of these four scores 6 9 3 6?

The variance is: 6.0


A number cube is tossed 20 times and lands on 1 two times and on four times?

What is the question?


In statistics what is the variance of these four scores 0 1 1 2?

The variance is: 0.666666666667


What is the probability of a coin tossed four times to get four heads?

The probability of a fair coin to land head is 1/2. Since for 4 flips it must land heads each time, the probability of 4 heads is 1/2 * 1/2 * 1/2 * 1/2 = 1/16.