\[{{d}_{i}}\] is the deviation of a class mark \[{{y}_{i}}\] from ?a? the assumed mean and \[{{f}_{i}}\] is the frequency, if \[{{M}_{g}}=x+\frac{1}{\sum {{f}_{i}}}(\sum {{f}_{i}}{{d}_{i}})\], then x is

\[{{d}_{i}}\] is the deviation of a class mark \[{{y}_{i}}\] from ?a?

1.	\[{{d}_{i}}\] is the deviation of a class mark \[{{y}_{i}}\] from ?a? the assumed mean and \[{{f}_{i}}\] is the frequency, if \[{{M}_{g}}=x+\frac{1}{\sum {{f}_{i}}}(\sum {{f}_{i}}{{d}_{i}})\], then x is
A.	Lower limit
B.	Assumed mean
C.	Number of observations
D.	Class size
Answer» C. Number of observations

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\[{{d}_{i}}\] is the deviation of a class mark \[{{y}_{i}}\] from ?a? the assumed mean and \[{{f}_{i}}\] is the frequency, if \[{{M}_{g}}=x+\frac{1}{\sum {{f}_{i}}}(\sum {{f}_{i}}{{d}_{i}})\], then x is

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