Mean and variance of the binomial distribution (HSC SSCE Mathematics Extension 1): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the mean in a binomial distribution represent?
What does the mean in a binomial distribution represent?
Expected successes
What is the formula for variance in binomial distribution?
What is the formula for variance in binomial distribution?
np(1-p)
In a binomial distribution, what does 'n' represent?
In a binomial distribution, what does 'n' represent?
Number of trials
If p = 0.5 and n = 10, what is the mean?
If p = 0.5 and n = 10, what is the mean?
5
What does a higher variance indicate?
What does a higher variance indicate?
More spread in data
What is the effect of increasing 'n' in a binomial distribution?
What is the effect of increasing 'n' in a binomial distribution?
Closer to mean
If n = 20 and p = 0.3, what is the variance?
If n = 20 and p = 0.3, what is the variance?
4.2
What does the binomial distribution model?
What does the binomial distribution model?
Independent trials
What is the probability of success in a binomial trial?
What is the probability of success in a binomial trial?
Constant for each trial
In manufacturing, why is variance important?
In manufacturing, why is variance important?
To estimate defects