# Introduction to Statistics

## Trending Questions

**Q.**Which number is the tally mark representing?

- 8
- 10
- 12
- 14

**Q.**

Arranging data in a specific order is called

Verification

Sorting

Merging

Classification

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

**Q.**

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

Text

Graphs

Figures

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?

- ₹16
- ₹18
- ₹20
- ₹22

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

- 6 million
- 7 million
- 8 million
- 10 million

**Q.**

In order to analyse and interpret a data set, we should

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

**Q.**

To have some meaningful information, a

data

diagram

collection of objects

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.

- 80
- 70
- 60
- 100

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

- VI 'B'
- VI 'A'
- 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?

- Ankit
- Shiv
- Aman
- 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?

- It will increase.
- It will decrease.
- It will be equal.
- 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_________.

- data intrepretation
- None of the above
- data collection
- data representation

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

- 18
- 20
- 26
- 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.

Both the statements represent data.

Statement 1 is data and statement 2 is information

Statement 1 is information and statement 2 is data

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.

True

False

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

- 69, 45 - 94
- 69, 56 - 85
- 45, 56 - 85
- 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?

- 15
- 13
- 12
- 16

**Q.**How many types of averages are there?

**Q.**

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

- Red block is the heaviest
- Blue block is the heaviest
- Green block is the lightest
- Cannot say

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

- 1 unit= 4kg
- 1 unit= 10kg
- 1 unit= 6kg
- 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

- >
- =
- <

**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_________.

- data representation
- data intrepretation
- None of the above
- data collection

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

- Red
- Blue
- Yellow
- Green

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

What score is represented on the board?

- 7
- 3
- 4
- 8