Raw Data

Q. Statistics is a branch of mathematics which deals with numbers and data analysis.

1. True
2. False

Q. Find the median for the following data: 122, 130, 115, 145, 132, 146, 149, 133, 140, 144.

Q.

State true or false: The dominant process in data warehouse is summarized data retrieval.

Q. The monthly income of Heaven households in a village 1200, 1500, 1400, 1000, 1000, 1600, 10, 000, 1) find the median income of the households ? 2) if one more household with monthly income of Rupees 1500 is added what will be the median income become?

Q.

The mean and median of the following list of values are:

8, 9, 10, 10, 10, 11, 11, 11, 12, 13

1. 10.5, 10.5

2. 11, 10.5

3. 10.5, 11

4. 11, 13

Q.

Find the median of the following set of points in a game:

15, 14, 10, 8, 12, 8, 16

1. 8

2. 9

3. 6

4. 7

Q.

Raw data is:

1. Information in a proper organised form

2. Same as data

3. Information in an unorganised form

4. Information which is useless

Q. The following table shows the marks obtained by 41 students of a class.

Marks obtained	15	17	20	22	25	30
Number of students	2	5	10	12	8	4

Find the median and mean marks.
Using empirical formula, calculate its mode.

Q. Which of the following dataset are organised?

Data 1 :- {2 , 5 , 61 , 21 , 11 , 15}
Data 2 :- {12 , 5 , 6 , 10 , 11 , 15}
Data 3 :- {2 , 5 , 6 , 16 , 11 , 15}
Data 4 :- {2 , 5 , 6 , 10 , 11 , 15}

1. Data 2
2. Data 1
3. Data 4
4. Data 3

Q.

Consider the following data showing runs scored by 11 players in a cricket match:

1, 4, 6, 7, 0, 10, 5, 8, 12, 8, 87

This data is termed as

1. Daton

2. Secondary data

3. None

4. Raw data

Q. what is mean by mean absolute error?

Q. The marks obtained by 10 students in a test are: 52, 46, 92, 78, 62, 44, 34, 46, 58, 52.
The presentation of data in the above manner is called .

1. raw data
2. frequency
3. organised data

Q. What is the median of the dataset - 200, 300, 400, 500, 600?

1. 300
2. 200
3. 400
4. 100

Q. The favourite colours of a few children were noted in a survey. How many children were there in total for the survey?

1. 17
2. 18
3. 16
4. 20

Q. what is the use of expressions in mathematics?

Q.

Find the mean proportional between:
$\left(i\right)$ $6$ and $24$
$\left(ii\right)$ $3$ and $27$
$\left(iii\right)$ $0.4$ and $0.9$

Q. Define the terms:

(i) Data
(ii) Raw data
(iii) Array
(iv) Tabulation of data
(v) Observations
(vi) Frequency of an observation
(vii) Statistics

Q.

Determine whether the following is a statistical question.

Did Shyam watch television last night?

1. This is not a statistical question as here we get the absolute data without variability.
2. This is a statistical question as here we get the absolute data without variability.
3. This is not a statistical question as here we get the absolute data with variability.
4. This is not a statistical question as here we do not get any absolute data.

Q. Calculate the mean and median for the folllowing data:

Marks	:	10	11	12	13	14	16	19	20
Number of students	:	3	5	4	5	2	3	2	1

Using empirical formula, find its mode.

Q.

What is the median of following data?

34, 27, 45, 55, 22, 30, 40

1. 35

2. 36

3. 39

4. 34

Q. A die was thrown 20 times and the following scores were recorded:
5, 2, 1, 3, 4, 4, 5, 6, 2, 2, 4, 5, 5, 6, 2, 2, 4, 5, 5, 1
Prepare the frequency table of the scores on the upper face of the die and find the mean score.

Q.

The weight of 15 students are

29, 27, 35, 31, 41, 37, 43, 32, 34, 28, 42, 36, 45, 44, 30

Find the median.if the weight of 44 kg is replaced by 46kg and 27kg by 25kg, what will be the new median

Q. The monthly income of Heaven households in a village 1200, 1500, 1400, 1000, 1000, 1600, 10, 000, 1) find the median income of the households ? 2) if one more household with monthly income of Rupees 1500 is added what will be the median income become?

Q. The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6 of them (in kg) are 52, 54, 55, 53, 56 and 54. Find the weight of the seventh student.

Q. Find the median of the following data (1-8)
41, 43, 127, 99, 71, 92, 71, 58, 57

Q. How can we organise the following items?

Red ball , Blue ball , Yellow ball , Black ball , Black ball , Red ball , Black ball , Blue ball , Blue ball , Yellow ball , Red ball , Red ball , Blue ball , Black ball.

1. Organise by shape
2. Organise by colour
3. Writing names
4. Pronouning names

Q. Find the median of the following data (1-8)
92, 35, 67, 85, 72, 81, 56, 51, 42, 69

Q. What is the median of the dataset - 200, 300, 400, 500, 600?

1. 200
2. 300
3. 400
4. 100

Q. Below graph represents the relationship between data restored and time.
The iniatl data size is

1. 0 TB
2. 6 TB
3. 10 TB

Q. From the given questions below, choose the question which is NOT statistical.

1. How many cars does a typical family have?
2. How much water do people drink per day?
3. How long are great white sharks?
4. How many days are in april?