doubt

Cristiano Ronaldo

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Oct 17, 2020, 5:45:41 PM10/17/20

to Discussion forum for Statistics for Data Science I

Hello!

This is regarding week 1 assignment 4.

Q3)

Interval has been given in the question so why is the answer ORDINAL?

Q8)

why no arithmetic (addition/subtraction) is not possible in the ORDINAL scale?

Q3) value of time always changing.PNG

Anand Iyer

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Oct 18, 2020, 12:31:34 AM10/18/20

to Discussion forum for Statistics for Data Science I, Cristiano Ronaldo

The given variable is interval scale only if each data point is equally separated from the next/previous data point. Here the first data point 0 - 30 contains 30 units, while the second data point 30 - 45 has only 15 units. So, this is ordinal.

Statistics 1 Support 1

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Oct 18, 2020, 12:32:49 AM10/18/20

to Discussion forum for Statistics for Data Science I, Cristiano Ronaldo

Hi,

Q3)

Since intervals of time is given as data points, therefore you can not do any arithmetic operations on these data points. It implies this variable does not hold numeric properties that's why it is categorical variable and a certain order is there in the data points, therefore it has ordinal scale of measurement.

Q8)

Ordinal scale of measurement is applicable on those categorical variables where no numeric properties make any sense but only order makes some sense. That's why no arithmetic operations is possible on ordinal scale of measurement.

Thanks

Nitin Kumar Jha

Statistics course instructor

On Sunday, October 18, 2020 at 3:15:41 AM UTC+5:30 Cristiano Ronaldo wrote:

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