65 Answered Questions for the topic Data Science

Data Science Math Statistics Mathematics

29d

Should we adjust for multicollinearity before or after feature selection?

I am conducting a regression analysis with a data set that has high multicollinearity with high VIF values. I adjusted for it before my feature selection, and I also tried adjusting for it only... more
Data Science C# Data

05/17/22

Updating averages

Hello,I'm analyzing some data and calculating averages. Basically what im doing is calculating the average ranges of gps coordinates from a central location. My issue is that I want to update said... more
Data Science Statistics

05/16/22

Consider a p-dimensional hypercube, What is the probability of the event...

Considering a p-dimensional hypercube H_1^p = [-1,1]^p.Assume we draw two p-dimensional points, a = (a_1, a_2, ..., a_p) and b = (b_1, b_2, ..., b_p) uniformly at random from this hypercube.Denote... more
Data Science Computer Science Python

03/10/22

Using regex to find file location from traceback file

so there’s a trace back log txt file that contains Traceback (most recent call last): File "/home/datascience/logs/read_data.py", line 1, in word_count with open(filename) as f: ... more
Data Science Data

02/23/22

discuss which join operation can help to retrieve the records from multiple tables. Justify your answer with at least two solid arguments.

Consider a scenario, there are three tables name ‘X’, ‘Y ‘and’ Z’ with schemes X (u, v, w), Y (l, u, m, n, o, p) and Z (r, s, t, u, q), These tables have a common attribute or field. We want to... more
Data Science Computer Science

01/14/22

What is the answer

The location of the element myArrayI5, 6] of the array with the name myArray with dimensions 8 and 9,assuming lower bound of 1, width of 1 and base address = 100, in the memory using Column-wise... more
Data Science Statistics Probability Data

01/02/22

Probability data analysis statistics

A hospital is trying to decide how many new rooms to add to a new wing they are building. Each new room will contain one bed. There are currently 100 rooms. Each new room will cost $80,000 for... more
Data Science

01/02/22

Perform the task of classification and present your result in recall, precision and accuracy?

Hey I am trying to solve this but couldn't, if anyone can help me out and solve it for me, I will be grateful. Dataset link: https://archive.ics.uci.edu/ml/datasets/Car+Evaluation

12/30/21

Probability decision analysis

Bank Chicago is investigating mistakes at three of its branches to try to determine the major causes of these mistakes. Branch three has the lowest percentage of mistakes, with one percent of... more

09/25/21

Conducting Developmental Research (Questions)

1. In a classic study by Bandura (1965), preschool-age children were individually taken to a research room to watch a film. The film portrayed an adult hitting an inflatable doll with a mallet and... more
Data Science English

09/24/21

Do you think this is healthy and positive for coexistence in our society?

Nowadays our society has developed a very marked dependence on the use of technologies.

09/20/21

How can I find Gross Margin and COGS knowing Sales, Profit, Discount, Product Quantity, Shipping Cost?

I have an E-Commerce dataset. How can I find Gross Margin and COGS knowing Sales, Profit, Discount, Product Quantity, Shipping Cost?
Data Science Statistics

07/01/21

How can I choose the best initial state according to 1,000 different scenarios?

I run a Monte Carlo simulation that generates more than 1000 different scenarios. For each scenario, I run an optimization algorithm and get the switches' status. The status of switches is 0... more
Data Science Science Biology Chemistry

05/21/21

good explanation needed i need help

A person claims that aspirin is not “natural” and refuses to use it to relieve their pain. Which of the statements best refutes (argues against) this person’s claim? Aspirin has been used to... more
Data Science Biology Data

05/09/21

Tukey test help!

Hey,I don't understand what this Tukey test shows. Can someone help me?$`species:treatment` diff lwr upr ... more
Data Science Science Biology Chemistry

05/04/21

My goodness I have been needing help with my chemistry homework for many days and I was told that wyzant tutors can help. Please help me correctly as soon as possible please

Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below. 2NaClO3­ --> 2NaCl +3O2 How many moles of NaCl were produced by 7 moles of NaClO3­? Round your... more
Data Science Science Biology Chemistry

05/04/21

I have been ignored and helped incorrectly by tutors please would someone kindly help me with my chemistry homework

1.) 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation how many moles of N2 can be made when 13 moles of CuO are consumed? 2.) Sodium chlorate decomposes into sodium chloride and oxygen gas as... more
Data Science Science Biology Chemistry

05/04/21

Please understand that no one has helped me and I need help with my chemistry homework please help me please respond

1.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above equation how many moles of H2SO4 can be made when 56 moles of HNO3 are consumed?2.) S   + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2OIn the above... more
Data Science Science Biology Chemistry

05/04/21

Many tutors have helped me with this question in chemistry homework incorrectly please someone respond and help me as soon as possible please

1.) 3 Cu + 8HNO3 --> 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many moles of water can be made when 25 moles of HNO3 are consumed?2.) Sodium chlorate decomposes into sodium chloride... more
Data Science Science Biology Chemistry

05/03/21

Hello I have been needed help for days with my chemistry homework. Would someone kindly help me as soon as possible please

Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below.  ­­2NaClO3­ --> 2NaCl +3O2 How many moles of NaCl were produced by 7 moles of NaClO3­? Round your... more
Data Science Science Biology Chemistry

05/03/21

I am in desperate need of help with my chemistry homework as soon as possible please because I have been ignored by many tutors for hours

1.) 2 NH3 + 3 CuO g 3 Cu + N2 + 3 H2OIn the above equation how many moles of N2 can be made when 13 moles of CuO are consumed? 2.) Sodium chlorate decomposes into sodium chloride and oxygen gas as... more
Data Science Science Biology Chemistry

05/03/21

I need so much help with my chemistry homework because I have been stuck for days please help me as soon as possible please

1.) 3 Cu + 8HNO3 --> 3 Cu(NO3)2   + 2 NO + 4 H2OIn the above equation how many moles of water can be made when 25 moles of HNO3 are consumed?2.) Sodium chlorate decomposes into sodium chloride... more

05/03/21

Hola please understand that I have needed help with my homework for weeks please someone actually respond and help me

1.) For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 17 moles of methane, CH4 ?Round your answer to the nearest tenth. If you answer is a whole number like 4,... more

05/03/21

Hi so no tutors have helped me at all I need so much help. I have needed help for many hours with my chemistry homework please help me as soon as possible please

S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2OIn the above equation, how many grams of water can be made when 4.4 moles of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a whole... more

05/03/21

All tutors have completely ignored me please correctly help me with chemistry homework as soon as possible please

S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2OIn the above equation, how many grams of water can be made when 4.4 moles of HNO3 are consumed?Round your answer to the nearest tenth. If you answer is a whole... more

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