Find the new value if $150$ is increased by $30 %$ .

200

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180

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145

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195

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Solution

The correct option is D $195$
Increase $= 30 %$ of $150$

$= \frac{30}{100} \times 150$

$= \frac{4500}{100} = 45$

Therefore, new value $= 150 + 45 = 195$

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Q. If 150 is increased by

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Find the mean and variance for the following frequency distribution

$\begin{matrix} Classes & 0 - 30 & 30 - 60 & 60 - 90 & 90 - 120 & 120 - 150 & 150 - 180 & 180 - 210 Frequency & 2 & 3 & 5 & 10 & 3 & 5 & 2 \end{matrix}$

The mean and standard deviation of six observations are 8 and 4, respectively. If each observation is multiplied by 3, find the mean and new standard deviation of the resulting observations.

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Find the new value if 150 is increased by 30%.

The correct option is D 195Increase =30% of 150=30100×150=4500100=45Therefore, new value =150+45=195

Find the new value if $150$ is increased by $30 %$ .

The correct option is D $195$
Increase $= 30 %$ of $150$

$= \frac{30}{100} \times 150$

$= \frac{4500}{100} = 45$

Therefore, new value $= 150 + 45 = 195$