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Estimate the standard deviation of the process:
Draw the X (bar) and R charts for the data given and give your comments about the process under study. Estimate the standard deviation of the process.
Sample No.
Individual Measurement
1.
72
70
-70
64
2.
68
67
65
3.
66
62
4.
69
5.
6.
7.
60
61
8.
71
9.
10.
11.
73
12.
13.
63
14.
15.
74
Ques: Differentiate between :
i) Parameter and Statistics
ii) Target Population and Sampled Population
iii) Stratified Random Sampling and Cluster Sampling
iv) Multistage Sampling and Multiphase Sampling
v) Sampling errors and Non-Sampling Errors
HOW WOULD YOU INTERPRET THIS PROBABILITY:P(a)=1.05
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Uses Arithmetic mean is widely used because of the following reasons: Mean is the simplest average to understand and easy to compute. It
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To compare three brands of computer keyboards, four data entry specialists were randomly selected. Each specialist used all three keyboards to enter the same kind of text material
Explain any two applications of statistics
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Histogram: It is generally used for charting continuous frequency distribution. In histogram, data are plotted as a series of rectangle one over the other. Class intervals
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