## #StackBounty: #correlation #clustering #modeling #normalization #standardization Creating a popularity index from multivariate data

### Bounty: 50

I am given data from an ecommerce website with features like product_name, product_category product_link, product_id, free_delivery(1 or 0), price, discount, avg_rating, number of reviews, search_rank, date where search_rank is position of the product when a category webpage is opened.

I want to create a popularity_index based on above mentioned features.

My approach till now is to normalize the columns search_rank, ratings and avg_rating and assign weights a,b,c to these and assign popularity_index the value $$ax+by+cz$$ for each category.

Can I do it in a better way? Do I incorporate some common statistical techniques that I am missing?

It is a single metric or an index which we can look at to compare two products based on those 3 variables. For example, a product with popularity_index 44.5 is way more popular than some product with popularity_index 1.5. Something on the lines of a socio-economic index or happiness index of countries based on various variables.

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!

## #StackBounty: #visualization #correlation #data-analysis #excel Calculating optimal 'phase shift' when comparing two linear dat…

### Bounty: 50

Let’s say I have two columns of data, when graphed they look like this:

This does not have a particularly wonderful correlation.

On the other hand if I shift one graph 10 datapoints relative to the other:

Clearly the two graphs are virtually identical, but one ‘lags’ the other.

What are:

1. the proper technical terms where I have said ‘lag’ and ‘phase shift’, to describe this situation?
2. tools to identify this i.e. "what ‘shift’ will give the best correlation score’?

I’m currently just hacking this in Excel, is it the sort of thing I might find available without specialist tools or writing my own code?

Get this bounty!!!