Frequency Distribution Table

Q. The difference between the upper class limit and lower class limit is called class .

1. width
2. frequency
3. interval
4. mark

Q. Question 10
The following table shows the cumulative frequency distribution of marks of 800 students in an examination.
$\begin{array}{cc}Marks& Numberofstudents\\ Below10& 10\\ Below20& 50\\ Below30& 130\\ Below40& 270\\ Below50& 440\\ Below60& 570\\ Below70& 670\\ Below80& 740\\ Below90& 780\\ Below100& 800\end{array}$
Construct a frequency distribution table for the data above.

Q.

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

1. 4, 9

2. 4, 7

3. 3, 9

4. 2, 2

Q. Question 11
Construct a frequency distribution table from the following data
$\begin{array}{cc}Marks\left(outof90\right)& Numberofstudents\\ Morethanorequalto80& 4\\ Morethanorequalto70& 6\\ Morethanorequalto60& 11\\ Morethanorequalto50& 17\\ Morethanorequalto40& 23\\ Morethanorequalto30& 27\\ Morethanorequalto20& 30\\ Morethanorequalto10& 32\\ Morethanorequalto0& 34\end{array}$

Q. Question 9
The following is the distribution of weights (in kg) of 40 persons.
$\begin{array}{ccccccccc}Weight\left(inkg\right)& 40-45& 45-50& 50-55& 55-60& 60-65& 65-70& 70-75& 75-80\\ Numberofpersons& 4& 4& 13& 5& 6& 5& 2& 1\end{array}$
Construct a cumulative frequency distribution (of the less than type) table for the data above.

Q.

State true or false.
The marks obtained by 10 students in a mathematics test are
given here: 52, 46, 92, 78, 62, 44, 34, 46, 58, 52.
The presentation of data in the above manner is called ungrouped frequency table.

1. True

2. False

Q. Find the value of r in the following equaton
$2\times \frac{314}{100}\times r=\frac{2512}{10}$

Q. Observe the given dot plot representing temperature at two beaches for 10 days.

What is the correct way to find the measure of centre and variability of the given data.
Beach A Beach B

Q. Solve graphically:
$15x-8y=29$ and $17x+12y=75$

1. $x=9,y=2$
2. $x=3,y=2$
3. $x=7,y=2$
4. $x=2,y=2$

Q.

Find the frequency of 40 in the following given set of data.

10, 40, 80, 100, 60, 40, 30, 40, 20, 40.

1. 3

2. 4

3. 1

4. 2

Q. In which frequency distribution each class consists of a single value?

1. cumulative
2. grouped
3. ungrouped
4. relative

Q. Question 14
Given below is a cumulative frequency distribution showing the marks secured by 50 students of a class
$\begin{array}{cccccc}Marks& Below20& Below40& Below60& Below80& Below100\\ Numberofstudents& 17& 22& 29& 37& 50\end{array}$
Form the frequecy distribution table for the data.