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Standard VIII

Mathematics

Arithmetic Mean from Frequency Table

∑ sigma indic...

Question

$\sum$ (sigma) indicates the ____.

sum

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Solution

The correct option is A sum
The sum of $f_{i} \times x_{i}$ is denoted as $\sum f_{i} \times x_{i}$ , $\sum$ (sigma) indicates the ‘sum’.

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Similar questions

Q. Indicate the

σ

and

π

bonds in

C_{6} H_{6}

Indicate the $σ$ and $π$ bonds in the following molecules:
$C_{6} H_{6}$

$C_{6} H_{12}$ ,

$C H_{2} C l_{2}$

$C H_{2} = C = C H_{2}$

$C H_{3} N O_{2}$

Indicate the $σ$ and n bonds in the following molecules:

Q. Indicate the

σ

and

π

bonds in the following molecules.

C_{6} H_{6}, C_{6} H_{12}, C H_{2} C l_{2}, C H_{2} = C = C H_{2}, C H_{3} N O_{2}, H C O N H C H_{3}

Q. For a frequency distribution standard deviation is computed by applying the formula
(a)

σ = \sqrt{\frac{Σ f d^{2}}{Σ f} - {(\frac{Σ f d}{Σ f})}^{2}}

(b)

σ = \sqrt{{(\frac{Σ f d}{Σ f})}^{2} - \frac{Σ f d^{2}}{Σ f}}

(c)

σ = \sqrt{\frac{Σ f d^{2}}{Σ f} - \frac{Σ f d}{Σ f}}

(d)

\sqrt{{(\frac{Σ f d}{Σ f})}^{2} - \frac{Σ f d^{2}}{Σ f}}

Question 45

Predict the hybridisation of each carbon in the molecule of organic compound given below. Also indicate the total number of sigma and pi-bonds in this molecule.

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∑ (sigma) indicates the ____.

The correct option is A sumThe sum of fi×xi is denoted as ∑fi×xi, ∑ (sigma) indicates the ‘sum’.

$\sum$ (sigma) indicates the ____.

The correct option is A sum
The sum of $f_{i} \times x_{i}$ is denoted as $\sum f_{i} \times x_{i}$ , $\sum$ (sigma) indicates the ‘sum’.