Data

Q.

What does statistics as a subject mean?

Q. The representation of observations and frequencies in tabular form is called the ________.

1. frequency distribution table.
2. table
3. data table
4. critical table

Q.

What is the median of 2, 4, 6, 8 and 10?

1. 7

2. 6

3. 7

4. 8

Q. In a class there are 12 boys and 7 girls. The teacher wants to select a boy or a girl to represent a quiz competition. In how many ways can the teacher make this selection?

1. 7
2. 12
3. 19
4. 20

Q. A student is asked to collect the information about the number of electricity units consumed by a householder in a locality during the last 24 hours, the data thus collected is known as

1. A secondary data
2. Frequency data
3. A primary data
4. Important data

Q. Height of 20 saplings in nursery is noted as 80, 79, 102, 90, 94, 124, 111, 87, 88, 103, 72, 126, 125, 88, 98, 96, 127, 128, 74, 80. Find the range of their heights.

Q. Please give me some preference s of the questions related to time and work

Q.

Question 93

The marks obtained (out of 20) by 30 students of a class in a test are as follows :
14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14,
19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20.
Preparing a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

Q.

Two persons $A$ and $B$ have respectively $n+1$ and $n$ coins, which they toss simultaneously. Then the probability that $A$ will have more heads than $B$ is:

1. $\frac{1}{2}$

2. $>\frac{1}{2}$

3. $<\frac{1}{2}$

4. None of these

Q.

The following are the temperatures (in degrees centigrade) of 20 cities around India on a particular day in November.

Find the range of the data.

$22,15,6,25,18,14,0,29,18,21,14,17,0,21,18,-2,17,5,11,18.$

Q.

In a 100 m race 10 sprinters participate. What data do we need to collect to find the fastest sprinter?

Q. The statement "Which of the two fruits do you prefer, orange or mango ? " represents a statistical question.

1. True
2. False

Q. In a class there are 16 boys and 7 girls. The teacher wants to select a boy or a girl to represent a quiz competition. In how many ways can the teacher make this selection?

1. 7
2. 16
3. 22
4. 23

Q. In a 100 m race 10 sprinters participate. What data do we need to collect to find the fastest sprinter?

1. the time taken by each sprinter to cover a particular distance
2. the time taken by particular sprinter to cover a particular distance
3. the time taken by any sprinter to cover a particular distance
4. cover a particular distance

Q.

Determine whether the following is a statistical question, if data pertaining to internet searches is available.

How many internet searches do residents at Jacque’s retirement home perform each day? (Yes/No)

__

Q.

Question 80(i)

In Delhi University, in the year 2009-10, 49000 seats were available for admission to various courses at graduation level. Out of these 28200 seats were for the students of General Category while 7400 seats were reserved for SC and 3700 seats for ST. Find the percentage of seats available for students of General Category.

Q.

Question 82(i)

Given below is a frequency distribution table. Read it and answer the questions that follow.
$\begin{array}{cc}Classinterval& Frequency\\ 10-20& 5\\ 20-30& 10\\ 30-40& 4\\ 40-50& 15\\ 50-60& 12\end{array}$
What is the lower limit of the second class interval ?

Q.

The following pictograph shows the amount of fuel used in three spaceships on a particular day. Observe the pictograph and answer the following questions.

I.Find the ratio of total amount of fuel used by A and B to the amount of fuel used by C?
II.Find the average amount of fuel used by three ships on that day?

Q.

Question 82(ii)

Given below is a frequency distribution table. Read it and answer the questions that follow.
$\begin{array}{cc}Classinterval& Frequency\\ 10-20& 5\\ 20-30& 10\\ 30-40& 4\\ 40-50& 15\\ 50-60& 12\end{array}$
What is the upper limit of the last class interval ?

Q.

To get the census of the country, the government collected data from hospitals for the number of births and deaths of people. What kind of data is it?

1. Primary

2. Secondary

3. Tertiary

4. None of these

Q.

What is the median of 2, 4, 6, 8 and 10?

1. 7

2. 6

3. 7

4. 8

Q. A teacher wants to find out the smartest kid in a class. For that he gives a test. What is the data that needs to be collected?

1. the marks scored by every teacher.
2. the marks scored by every kid.
3. the marks scored by 10th grade students.
4. the marks scored by 9th grade students.

Q.

Determine whether the following is a statistical question if data pertaining to internet searches is available.

How many internet searches do residents at Jacque’s retirement home perform each day? (Yes/No)

__

Q.

Determine whether the following is a statistical question.

Did Shyam watch television last night? (yes/no)

__

Q. The range of the data: 11, 22, 33, 44 is:

1. 44
2. 30
3. 33
4. 22

Q.

how to find the range of temperature in a graph

Q.

Determine whether the following is a statistical question or not.

If data pertaining to internet searches is available.How many internet searches do residents at galaxy apartment perform each day?

__

Q.

The following pie chart gives the distribution of constituents in the human body. The central angle of the sector showing the distribution of protein and other constituents is

Protein 16% 

Q.

Madhav and Rama have feedback forms from 50 participants in a workshop where the participants have commented about different sessions. They want to know how the workshop was. What kind of data they are handling?

1. Quantitative data

2. Qualitative data

3. Mixed

4. Do not know

Q.

Have you seen frequency tables and various kinds of graphs in newspapers and magazines? Cut them out and paste them in “My Math Book”. Why do you think graphs are used instead of tables sometimes?