123 Answered Questions for the topic Data Science

Data Science

07/25/22

arrays sum AND in data stuctures
Antonio got an array A for his christmas present. Array A consists of N positive integers.He wants to give a pair of integers from this array to his girlfriend Teena.Teena likes a pair of... more
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Data Science

07/20/22

Hess law calculation
Given the following equations calculati\e the enthalpy
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Data Science Statistics Probability

07/10/22

How to calculate the likelihood?
We will define the following probabilities for a PCR test:p - The probability that a pcr test of a **sick** person, will show us a positive result.q - The probability that a pcr test of a... more
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Data Science Math Statistics Mathematics

06/02/22

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
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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
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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
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Data Science Biology Biochemistry Excel

04/26/22

How do I integrate two separate large raw data tables with the same variables into one large?
I have two tables showing the concentration of a substance over time, in which the beaker are shun with various colors. The lab is done in six trials. As you see the two tables are structured... more
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04/22/22

What statistical test should I use for this statistics report?
I  will copy-paste my questionshttps://drive.google.com/file/d/1j1yRqwith0wlm1ool4pPQf-iw8_1JIw7/view?usp=sharingthis is the data im meant to use, im meant to use excel. tysm!I understand this is a... more
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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
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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
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Data Science

02/21/22

data base management system
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
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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
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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
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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
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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
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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
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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.
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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?
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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
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Data Science Data

06/01/21

Solve the database question
University consists of several departments. Each department offers severalcourses. Students enroll in a particular course taught by a lecturer who is fromthe related department and each lecturer... more
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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
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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
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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
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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
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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
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