Look at the following table below- Weginarray - Whine0-6-alllhline6-12-blllhline12-18-15111hlineend array The missing class marks a and b are respectivelyA- 4-9B- 4-7C- 3-9D- 2-2

The correct option is C 3, 9 Class mark for a class interval is given by Class mark = Upper class limit+Lower class limit/2 For nbsp; the 1^st class interval ...

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Standard X

Mathematics

Frequency Distribution Table

Look at the f...

Question

Look at the following table below.
$\begin{matrix} Class Interval & Class mark 0 - 6 & a 6 - 12 & b 12 - 18 & 15 18 - 21 & 21 \end{matrix}$
The missing class marks $a$ and $b$ are respectively ____.

4, 9

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4, 7

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3, 9

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2, 2

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Solution

The correct option is C
3, 9

Class mark for a class interval is given by
$Class mark = \frac{Upper class limit + Lower class limit}{2}$
For the $1^{s t}$ class interval , $a = \frac{0 + 6}{2} = \frac{6}{2} = 3.$
For the $2^{n d}$ class interval, $b = \frac{6 + 12}{2} = \frac{18}{2} = 9.$

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Similar questions

Look at the following table below.
$\begin{matrix} Class Interval & Class mark 0 - 6 & a 6 - 12 & b 12 - 18 & 15 18 - 21 & 21 \end{matrix}$
The missing class marks $a$ and $b$ are respectively ____.

Look at the following table below.
$\begin{matrix} C l a s s i n t e r v a l & C l a s s m a r k 0 - 5 5 - 10 10 - 15 15 - 20 \end{matrix}$

The class-mark for the first and second class intervals are:

Q. Look at the following table below.

\begin{matrix} C l a s s i n t e r v a l & C l a s s m a r k 0 - 5 & - - 5 - 10 & - - 10 - 15 15 - 20 \end{matrix}

Fill in the blanks with the class marks of the corresponding class intervals.

Q. Marks of high school students are distributed in the table given below.

Marks (Class marks)	2.5	7.5	12.5	17.5	22.5
No. of Students (Frequency)	16	20	12	6	8

Build a histogram and find out the number of students having marks at least 15.

Q. Following is a table that has distributed the marks of 50 students in a class test.. How many students in the class managed to score between 60-80 marks in the test?

\begin{matrix} S c o r e s & C u m u l a t i v e F r e q u e n c y 0 - 20 & 1 20 - 40 & 12 40 - 60 & 21 60 - 80 & 34 80 - 100 & 50 \end{matrix}

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Look at the following table below. Class IntervalClass mark0−6a6−12b12−181518−2121 The missing class marks a and b are respectively ____.

The correct option is C 3, 9 Class mark for a class interval is given by Class mark=Upper class limit+Lower class limit2 For the 1st class interval , a=0+62=62=3. For the 2nd class interval, b=6+122=182=9.

Look at the following table below.
$\begin{matrix} Class Interval & Class mark 0 - 6 & a 6 - 12 & b 12 - 18 & 15 18 - 21 & 21 \end{matrix}$
The missing class marks $a$ and $b$ are respectively ____.

The correct option is C
3, 9

Class mark for a class interval is given by
$Class mark = \frac{Upper class limit + Lower class limit}{2}$
For the $1^{s t}$ class interval , $a = \frac{0 + 6}{2} = \frac{6}{2} = 3.$
For the $2^{n d}$ class interval, $b = \frac{6 + 12}{2} = \frac{18}{2} = 9.$