normal distribution in statistics

Mean of a binomial distribution = np = 9 Variance of a binomial distribution = npq = 6 Binomial distribution is given by..

The Application Areas of Linear Programming are: 1. Transportation Problem 2. Military Applications 3. Operation of System Of Dams 4. Personnel Assignment Problem 5. Other Applications: (a). manufacturing plants, (b). distribution centres, (c). producti..

The mean deviation (M.D) of a statistical data is defined as the arithmetic mean of the numerical values of the deviations of the items from some average. For an individual series, For a frequency distribution, If M.D is calculated about mean, then it is written as ..

Question: Find the mean for the following distribution: Answer: Mean=7.02..

X-axis 1 cm = 10 marks Y-axis 2 cm = 10 c.f To reconstruct frequency distribution from cumulative frequency distribution. When we write, 'less than 10 - less than 0', the difference give the frequency 4 for the class interval (0 - 10) and so on. ..

The mean deviation of a statistical data is defined as the arithmetic mean of the numerical values of the deviations of items from some average value. Mean deviation is also known as average deviation . The mean deviation is generally denoted by M.D. Formula for mean deviation for ungroup..

Question: Find the value of 'p', if the mean of the following distribution is 7.5. Answer: Mean=7.5 303 + 9p = 7.5(41 + p) 303 + 9p = 307.5 + 7.5p 9p - 7.5p = 307.5 - 303 1.5p = 4.5 p = 3..

. Class width or Class size is the difference between actual limits of any class. The class width of class (11 - 15) is 15.5 - 10.5 equal to 5. Similarly, the class interval of other classes is also 5. In inclusive type of frequency distribution, the class width of 11 - 15 is also 5 as bo..

Frequency Polygon - In a frequency distribution, the mid-value of each class is obtained. Then on the graph paper, the frequency is plotted against the corresponding mid-value. These points are joined by straight lines. These straight lines may be extended in both directions to meet the X..

Standard Deviation - of a statistical data is defined as the positive square root of the arithmetic mean of the squared deviations of items from their arithmetic mean of the series under consideration. The standard deviation is denoted by s (sigma). The standard deviation is also known as..