The height of 5 students (in cm) are as below.
{140, 145, 130, 135, 150}
Their mean value is .

125 cm

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140 cm

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145 cm

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150 cm

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Solution

The correct option is B 140 cm
$Mean = \frac{S u m o f a l l o b s e r v a t i o n s}{T o t a l n u m b e r o f o b s e r v a t i o n s}$

$= \frac{140 + 145 + 130 + 135 + 150}{5} = \frac{700}{5} = 140 c m$

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Similar questions

The table below shows the number of students in class 10 of a school, classified according to their heights:

Height

(cm)

Number of Students

120 − 125

125 − 130

130 − 135

135 − 140

140 − 145

145 − 150

150 − 155

155 − 160

Calculate the mean height

Length(cm)	$120 - 125$	$125 - 130$	$130 - 135$	$135 - 140$	$140 - 145$	$145 - 150$
Number of plants	$8$	$10$	Y	$16$	$8$	$12$

The mean length of the plants is $136$ cm. Find y in the table.

Height of student (cm)	135 - 140	140 - 145	145 - 150	150 - 155
No. of students	4	12	16	8

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