normal distribution in statistics

The variance of the Poisson distribution = l = 2 Recurrence relation is given by ..

) The class intervals are made continuous and then the histogram is constructed. (ii) A kink or a zig-zag curve is shown near the origin. It indicates that the scale along the horizontal axis does not start at the origin. (iii) The horizontal scale and the vertical scale need not be same. Dist..

Scores in statistics obtained by students of a class are normally distributed. If 12.5% obtain 60% scores and above and 39% less than 30, then find the mean and the standard deviation of the scores. => 36.55, 20.98 or 35.89, 28.90 or 39.85, 29.80 or 35.88, 20.98..

Probability problems with finite sample spaces Conditional probability Discrete/continuous random variables Mean, variance of discrete random variable Standard distributions Mean, standard deviation of normally distributed random variable Central limit theorem ..

As the sample size n increases without limit, the shape of the distribution of the sample means taken with replacement from a population with mean μ and standard deviation σ will approach a normal distribution. This distribution will have mean μ a..

Choose the incorrect statement(s). I. A statistic is a numeric descriptive measure of a population. II. The sampling error is the difference between the population value of interest and sample value. III. If the sample is randomly selected from the population, then sampling error will be ..

When can the normal distribution be used as an approximation to the binomial distribution? => n . p = 5, n . q = 5 or n . p ≤ 5, n . q ≤ 5 or n . p > 5, n . q < 5 or n . p ≥ 5, n . q ≥ 5..

How many modes does a normal distribution curve have? => zero or more than two or one or two..

Which of the following curves represent a normal distribution curve? => Graph 3 or Graph 1 or Graph 4 or Graph 2..

Which of the following statements is/are true? I. The sampling distribution is a theoretical distribution of a sample statistic. II. Sampling distribution is same for each sample statistic. III. A sample distribution contains a finite numb..