Z Score And Its Applications- Important Stats Interview Question

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[krishnaik]

Video kaisa laga?...bahut mehnat lagta hai video banane...so Like thoko and dont forget to subscribe :)

[godse]

In addition to this I would add that z score can also be used to find outliers and it can also tell the probability% of the datapoint in context to sigma rule

[sunilsharanappa]

Normalization typically means rescales the values into a range of [0, 1]. Standardization typically means rescales data to have a mean of 0 and a standard deviation of 1 (unit variance).

[sethusaim]

Standardization is the process of bringing down the values to the same scale, where standard deviation is 1 and mean is 0 whereas Normalization is the process the bringing down the values to 0 and 1 in other terms re scaling the data to 0 and 1

[mdshahzada]

Z-score is used to find variability/distance of a data point from the mean value e.g how many sigma away a data point is from from the mean.

[arindamghosh]

Z-score is used to find how much standard deviation away from the mean our sample mean is and based on that we calculate the cumulative probability from the z-table.

[uditkumar]

diff between standardization and normalization --
standardization - we scale down the values between -1 to +1
normalization - we scale down the values between 0 to +1

[mdabidhussain]

z-score basically use for standardize the data or make the data set unit less. when we make the data set unit less then it will easy to understand and got all the data in the same pattern. The standardize data lies between -3.4 to +3.4

[srinivasan.g]

Thank you so much, because of this video, I got the clarity in Z score applications

[Whitetysnowny]

Thank u now I really understand what Z score is use for and how it relate to normla distributions. It usually not explain well or only show us the formula.

[yellankinaveen]

Standardization is used to decrease the value in between the 0 to 1 using the standard normal distribution and normalization used to decreases the value in between the o to 1

[muhammadm]

This is nothing but a good explanation sir

[vaibhavshah]

z-score is use to convert the outliers in 3rd standard deviation .
and it is used for standardization using standardscaler()

[engineeringnerds]

I used it to find liquidity in cryptocurrency very helpful....!!! Z score cluster

[anivesh]

z score is used for oultier detection and it compensastion, used for handling the non weighted data set

[Ligress]

My understanding before watching the video :
z score tells us how many standard dev is the value away from mean

formula = x - mean/ Standard dev

[bhargavikoti]

As usual..neatly explained 😁👍..thank you 🙏

[bishwajeetsingh]

Z score is used to normalize the data in such a way that the mean will be 0 and std dev will be 1 also it is used for finding outliers. anything outside the 3rd std dev in gaussian distribution is detected as outliers

[abhishek_maity]

That cricket example was Amazing!! 🔥🔥❤️

[awanishkumar]

Hi Krish thanks for choosing this topics, actually i get confuse or find some complexity while implementing in DS or ML projects, and yes i have got role of Data Science Engineer for PWC by taking ideas from your and your belonging, s videos