## Register Now

It will take less than 1 minute to register for lifetime. Bonus Tip - We don't send OTP to your email id Make Sure to use your own email id for free books and giveaways

## P-value in Linear Regression

P-value in Linear Regression
Suppose a child in the family goes to the school daily and one day, his teacher writes to his mother in the school diary that your son is very naughty and he was found fighting with another kid. This situation is quite common in schools and like any mother, this child’s mother says no my son is not naughty, it must have been the other kid who provoked him. Simple…agreed?

Now, if you wish to do a Hypothesis test whether this child is really naughty or not, you would presume that he is actually naughty (that would be your hypothesis of interest) but you would try to formulate another hypothesis opposite to this (i.e. your Null Hypothesis) that says that the child is not naughty.

So your two hypotheses would be:

Null: The child is not naughty

Alternative: The child is naughty

Then you would try to find evidence by collecting data and putting it to test.

Coming back to the story from the child’s school…

After some days, there is another complaint from the school of this child fighting with another kid and, again the mother of the kid in question does not accept the fault of her child.

The situation repeats itself again with this kid the third time with a third kid and now the mother becomes suspicious as to probably her child is really naughty.

Interestingly, this third instance in our example actually becomes what is Statistically called the Threshold of Significance (or the level of significance).

When the same child again is reported to fight with another kid, the mother has no other option but to accept that her child is really naughty and he finds ways to fight with other kids. This is actually when it is said that the evidence is “Statistically Significant”. This is accepted to be significant since it has occurred beyond the level of significance.

The above situation is purely hypothetical but could be a subject of a Statistical analysis somewhere.

Important Links to explore Data Science

We have covered 40+ complete Data Science company interviews from the candidates who cracked these interviews.
Data Science Companies interview questions

Complete Set of e-books from The Data Monk

Understand some of the very complex topics in Analytics which are asked in most of the interviews
The Data Monk Top Articles

How to become a Data Scientist? Complete study material, free resources and websites to practice
Become a Data Scientist

Make your profile on our website and practice at least 5-7 questions per day. Be a part of ~2000 Analytics expert
Keep Learning 🙂

Nitin Kamal
Co-Founder | The Data Monk