Tag: data handling analysis

Questions Related to data handling analysis

Find a 9596 confidence interval for the population mean from the following data:

Sample size n = 65, Mean = 6300, Standard deviation = 9.5, N=1000.

data handling analysis analysis of frequency distributions frequency table evs analysing data collection of data and presentation of data

  1. (6298 - 6302)

  2. (6301 - 6308)

  3. (6290 - 4310)

  4. (6288 - 6315)

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Correct Option: A

What are the shortcomings of frequency distribution?

data handling analysis analysis of frequency distributions frequency table evs analysing data collection of data and presentation of data

  1. it does not show the details that are found in raw data

  2. Once the data are grouped into classes, an individual observation has no significance in further statistical calculations

  3. Statistical calculations are based only on the values of the class mark and not on the values of the observations in that class

  4. All of these

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Correct Option: D

If $y \, = \, x^3 \, + \, 40$, find $\displaystyle \frac{d^2y}{dx^2} =$____.

data handling analysis analysis of frequency distributions frequency table evs analysing data collection of data and presentation of data

  1. $(6x^2 \, + \, 4)$

  2. (6x)

  3. $(6x \, + \, 2x^2)$

  4. (2x + 2)

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Correct Option: B

A tabular summary of a set of data showing classes of the data and the fraction of the items belonging to each class is called ______________.

data handling analysis analysis of frequency distributions frequency table evs analysing data collection of data and presentation of data

  1. the class width

  2. a relative frequency distribution

  3. a cumulative relative frequency distribution

  4. on ogive

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Correct Option: B

In a truly normal frequency distribution _________.

data handling analysis analysis of frequency distributions frequency table evs analysing data collection of data and presentation of data

  1. the mean always is the same as the standard deviation

  2. the mean is never the same as the mode

  3. the mode is never the same as the median

  4. the mean always is the same as the median

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Correct Option: D

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.