The following table gives the lifetimes of 400 neon lamps- - Lifetime in hr 300-400 400-500 500-600 600-700 700-800 800-900 900-1000- Number of lamps 14 56 60 86 74 62 48- - i Reperesent the given information with the help of a histogram- ii How may lamps have a lifetime of more than 700 hours-

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Standard IX

Mathematics

Histograms

The following...

Question

The following table gives the lifetimes of 400 neon lamps:
$\begin{matrix} Lifetime (in hr) & 300 - 400 & 400 - 500 & 500 - 600 & 600 - 700 & 700 - 800 & 800 - 900 & 900 - 1000 Number of lamps & 14 & 56 & 60 & 86 & 74 & 62 & 48 \end{matrix}$
(i) Reperesent the given information with the help of a histogram.
(ii) How may lamps have a lifetime of more than 700 hours?

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Solution

(ii) Lamps with lifetime more than 700 hours = 74 + 62 + 48 = 184

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Q. The following table gives the lifetimes of 400 neon lamps:

Lifetime (in hr)	300−400	400−500	500−600	600−700	700−800	800−900	900−1000
Number of lamps	14	56	60	86	74	62	48

(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?

The following table gives the life times of neon lamps:

Length (in hours)

Number of lamps

300 − 400

400 − 500

500 − 600

600 − 700

700 − 800

800 − 900

900 − 1000

(i) Represent the given information with the help of a histogram.

(ii) How many lamps have a lifetime of more than 700 hours?

The following table gives the life times of 400 neon lamps :

(i)

Represent the given information with the help of histogram.

Life time (in hours)	Number of lamps
$300 - 400$	$14$
$400 - 500$	$56$
$500 - 600$	$60$
$600 - 700$	$86$
$700 - 800$	$74$
$800 - 900$	$62$
$900 - 1000$	$48$

(i i)

How many lamps have a life time more than

700

hours?

Q. The following table gives the life times of neon lamps:

\begin{matrix} Length (in hours) & Number of lamps 300 - 400 & 14 400 - 500 & 56 500 - 600 & 60 600 - 700 & 86 700 - 800 & 74 800 - 900 & 62 900 - 1000 & 48 \end{matrix}

(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a life time of more than 700 hours?

Question 5 (i)
The following table gives the life times of neon lamps:
$\begin{matrix} Length (in hours) & Number of lamps 300 - 400 & 14 400 - 500 & 56 500 - 600 & 60 600 - 700 & 86 700 - 800 & 74 800 - 900 & 62 900 - 1000 & 48 \end{matrix}$
(i) Represent the given information with the help of a histogram.

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The following table gives the lifetimes of 400 neon lamps: Lifetime (in hr)300−400400−500500−600600−700700−800800−900900−1000Number of lamps14566086746248 (i) Reperesent the given information with the help of a histogram. (ii) How may lamps have a lifetime of more than 700 hours?

(ii) Lamps with lifetime more than 700 hours = 74 + 62 + 48 = 184