Introduction to Statistics

Q. Which number is the tally mark representing?

1. 8
2. 10
3. 12
4. 14

Q.

Arranging data in a specific order is called

1. Verification

2. Sorting

3. Merging

4. Classification

Q. Which of the following represent the tally marks of number 8?

1. 
2. 
3. 
4. 

Q.

Tabulation refers to a systematic presentation of numerical data in ____________.

1. Text

2. Graphs

3. Figures

4. Rows and columns

Q. The average earning of a person for the first four days of a week is $₹18$ and for the last four days is $₹22$. If he earns $₹20$ on the fourth day, what is average earning for the whole week?

1. $₹16$
2. $₹18$
3. $₹20$
4. $₹22$

Q. According to the given table, if the population of Kerala in 1911 is 7 million, then what is the population in 1931?

1. 6 million
2. 7 million
3. 8 million
4. 10 million

Q.

In order to analyse and interpret a data set, we should ___ it first.

Q. Using tally marks, which one of the following represented the number eight?

1. 
2. 
3. 
4. 

Q.

To have some meaningful information, a ___ is gathered.

1. data

2. diagram

3. collection of objects

4. single bar

Q. Andrew was asked to note down the scores of the students in a particular test. The collection of data so obtained is known as .

Q. The average mark obtained by Jay in four subjects is 70. He secured a total of 200 marks in mathematics, history, and science. He also secured a total of 150 marks in mathematics and English. Find the marks scored by Jay in mathematics.

1. 80
2. 70
3. 60
4. 100

Q. The class that has arranged their marks in ascending order is

1. VI 'B'
2. VI 'A'
3. VI 'D'

Q.

The average rainfall for a week, excluding Sunday was 0.3 inches. Due to heavy rainfall on Sunday, the average for the week rises to 0.5 inch. How much rain fell on Sunday?

Q. Who is the slowest in the race?

1. Ankit
2. Shiv
3. Aman
4. Rohit

Q. Alex and his friends played a spin wheel game. From the given data set, how would the median change if 5 is added to every number?

1. It will increase.
2. It will decrease.
3. It will be equal.
4. It will double the original value.

Q. In a class, a student collects the information about the number of days every student is present in a month. This is an activity of_________.

1. data intrepretation
2. None of the above
3. data collection
4. data representation

Q. Find the median of the data set: 10, 15, 18, 20, 23, 26, 29, 30, 31.

1. 18
2. 20
3. 26
4. 23

Q.

Statement 1: In 1685, there were 0 Dodo birds i.e. they had become extinct.

Statement 2: Jack is in past, rather than future.

In the context of Jack’s back to the future adventure, choose the correct option.

1. Both the statements represent data.

2. Statement 1 is data and statement 2 is information

3. Statement 1 is information and statement 2 is data

4. Both the statements represent information.

Q.

State whether the given statement is true or false:

The more data we have regarding something, the less accurate predictions we can draw.

1. True

2. False

Q. An art curator counted the artworks in each exhibit. Which of the following gives the center and spread of the data?

1. 69, 45 - 94
2. 69, 56 - 85
3. 45, 56 - 85
4. 94, 45 - 94

Q. The daily rainfall data of a week is shown. (Note: 1 drop =4 inches)

(a) What is the total rainfall on Friday?
(b) What is the total rainfall on Friday and Saturday?
(c) What is the total rainfall on Friday, Saturday and Sunday?

Q. Jack rolls a die on a table. What is the probability of getting a composite number?

1. $\frac{1}{5}$
2. $\frac{1}{3}$
3. $\frac{1}{2}$
4. $\frac{1}{6}$

Q. How many types of averages are there?

Q.

What can you say about the three blocks, shown in the figure?

1. Red block is the heaviest
2. Blue block is the heaviest
3. Green block is the lightest
4. Cannot say

Q. Which scale will make the shortest bars for the table given below?

1. 1 unit= 4kg
2. 1 unit= 10kg
3. 1 unit= 6kg
4. 1 unit= 3kg

Q. Distinguish between secondary and primary data which of these two sets of data is more reliable

Q. Test scores of Jonathan and Jameson is given. From the information, the average marks of Jonathan is the mean of Jameson.

1. >
2. =
3. <

Q. In a class, a student collects the information about the number of days every student is present in a month. This is an activity of_________.

1. data representation
2. data intrepretation
3. None of the above
4. data collection

Q. For which house is the number of boys and girls equal?

1. Red
2. Blue
3. Yellow
4. Green

Q. In a game, the scoreboard shows the score as given below:

What score is represented on the board?

1. 7
2. 3
3. 4
4. 8