It appears my working only for question iii were wrong for mean and standard deviation. Be interested to see what data you come up for iii only.Thanks a) The following data identifies the diameters of wire taken from 40 reels of cable during aquality test. Each measurement is taken to the nearest one hundredth of a millimetre[micrometer {um)]:-1.28 x1.371.411.391.27 x1.361.401.381.281.331.401.321.24 X1.431.351.341.381.311.361.351.301.361.381.291.261.391.331.371.301.451.351.371.381.421.341.331.421.351.341.38cumulative frequency distribution.ř Using 8 classes (for example 1.24 - 1.26, 1.27 - 1.29 etc), form a frequency distribution and aH. For the above data, draw a histogram and an ogive.j. From your diagrams identify the median and the modal class.Find the approximate mean and standard deviation.

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Description: It appears my working only for question iii were wrong for mean and standard deviation. Be interested to see what data you come up for iii only.Thanks a) The following data identifies the diameters of wire taken from 40 reels of cable during aquality

Here we are asked to find the mean and standard deviation. Given Data: 1.33 1.39 1.38 1.27 1.36…

Answered: jH. From your diagrams identify the…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

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It appears my working only for question iii were wrong for mean and standard deviation.

Be interested to see what data you come up for iii only.

Thanks

a) The following data identifies the diameters of wire taken from 40 reels of cable during a
quality test. Each measurement is taken to the nearest one hundredth of a millimetre
[micrometer {um)]:-
1.28 x
1.37
1.41
1.39
1.27 x
1.36
1.40
1.38
1.28
1.33
1.40
1.32
1.24 X
1.43
1.35
1.34
1.38
1.31
1.36
1.35
1.30
1.36
1.38
1.29
1.26
1.39
1.33
1.37
1.30
1.45
1.35
1.37
1.38
1.42
1.34
1.33
1.42
1.35
1.34
1.38
cumulative frequency distribution.
ř Using 8 classes (for example 1.24 - 1.26, 1.27 - 1.29 etc), form a frequency distribution and a
H. For the above data, draw a histogram and an ogive.
j. From your diagrams identify the median and the modal class.
Find the approximate mean and standard deviation.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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