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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ८

A paint company asked a group of students about their favourite colours and made a pie chart of their findings. Use the information to answer the following questions. How many students were asked - Mathematics

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प्रश्न

A paint company asked a group of students about their favourite colours and made a pie chart of their findings. Use the information to answer the following questions.

How many students were asked about their favourite colours?

योग

उत्तर

Class Intervals Tally Marks Frequency
150 − 200 II 2
200 − 250 III 3
250 − 300 IIII I 6
300 − 350 IIII 5
350 − 400 IIII II 7
400 − 450 IIII 4
450 − 500 III 3
Total 30

Total percentage of students = 100%

∴ 50 students = 100% – (30% + 20% + 25% + 15%)

= 100% – 90%

50 students = 10%

10% of total students = 50

∴ `10/100` (Total students) = 50

Total students = `(50 xx 100)/10` = 500

Total students = 500.

Total number of students = 500

500 students were asked about their favourite colours.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Statistics - Exercise 6.1 [पृष्ठ २२१]

APPEARS IN

सामाचीर कलवी Mathematics [English] Class 8 TN Board
अध्याय 6 Statistics
Exercise 6.1 | Q 5. (vi) | पृष्ठ २२१

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