Tag: maths

Questions Related to maths

Information presented through numbers is called ............ data.

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. Number

  2. Numerical

  3. Picture

  4. None of these

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Correct Option: B
Explanation:

Answer:- B) Numerical

Any information represented in the form of numbers is known as numerical data.

Facts of figures, collected with a definite purpose, are called:

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. Data

  2. Mean

  3. Mode

  4. Median

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Correct Option: A
Explanation:

Data is a collection of facts, such as values or measurements. 

It can be numbers, words, measurements, observations or even just descriptions of things.

Which of the following is an example of time series problem?

1. Estimating number of hotel rooms booking in next $6$ months.
2. Estimating the total sales in next $3$ years of an insurance company.
3. Estimating the number of calls for the next one week.

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. only $1$

  2. only $2$

  3. $1$ and $2$

  4. $1$, $2$ and $3$

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Correct Option: D

A spatio-temporal database is a database that manages :

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. Time

  2. Space

  3. Both

  4. None of the above

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Correct Option: C
Explanation:

A spatio-temporal database manages both time and space information.

Example: tracking of moving objects.

Spatial data is also known as 

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. Geospatial data

  2. Geographic information

  3. Temporal data

  4. None of these

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Correct Option: A,B
Explanation:

Spatial data gives the geospatial data and the geographical information like the oceans, mountains, etc. 

Thus it is known as geospatial data and geographic information.

Data can be classified as :

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. Primary

  2. Secondary

  3. Both

  4. None of the above

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Correct Option: C
Explanation:

Data is classified as both primary and the secondary data.


Primary data is the data which is collected for the first time.
Secondary data is the data which are collected by someone else and passed through the statistical process.

Time series is a sequence of 

maths data handling analysis analysis of frequency distributions analysing data collection of data and presentation of data

  1. Discrete-time data

  2. Variable-time data

  3. Spatial data

  4. None of the above

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Correct Option: A
Explanation:

Discrete time data occurs at distinct data points. Time series is a discrete time data.

If the number of consecutive odd integers whose sum can be expressed as $50^2 - 13^2$ is k then k, can be 

maths negative numbers and integers odd and even numbers operations on integers different types of numbers

  1. 33

  2. 35

  3. 37

  4. 39

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Correct Option: C
Explanation:

Sum of odd $n$ consecutive numbers $n^2$

$\therefore (1+3+5\dots\dots (2n-1))=n^2$
where $n$ represents the number of terms.
$\therefore 50^2=1+3+5\dots 99=50\text{ }terms$
$\therefore 13^2=1+3+5\dots 25=13\text{ }terms$
$\therefore 50^2-13^2$$=(1+3+5\dots 99)-(1+3+5\dots 25)\=(27+29\dots 99)\ =37\text{ }terms.$

Let A, B, C, D, E be the smallest positive integers having 10, 12, 15, 16, 20 positive divisors respectively. Then
A+B

maths whole numbers odd and even numbers operations on integers different types of numbers

  1. 108

  2. 110

  3. 126

  4. 120

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Correct Option: A

Mark the correct alternative of the following.
The successor of the smallest prime number is?

maths whole numbers odd and even numbers operations on integers different types of numbers

  1. $1$

  2. $2$

  3. $3$

  4. $4$

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Correct Option: C
Explanation:

The smallest prime number is $2$.

Hence the successor of $2$ is $3$.
So the successor of the smallest prime number is $3$.