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Databricks Certified Professional Data Scientist Exam - Topic 6 Question 24 Discussion

Actual exam question for Databricks's Databricks Certified Professional Data Scientist exam
Question #: 24
Topic #: 6
[All Databricks Certified Professional Data Scientist Questions]

Which method is used to solve for coefficients bO, b1, ... bn in your linear regression model:

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Suggested Answer: C

In the linear model, the bi's represent the unknown p parameters. The estimates for these unknown parameters are chosen so that, on average, the model provides a reasonable estimate of a person's income based on age and education. In other words, the fitted model should minimize the overall error between the linear model and the actual observations. Ordinary Least Squares (OLS) is a common technique to estimate the parameters


by Quentin at May 29, 2022, 07:00 PM

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Carma
4 months ago
OLS minimizes the sum of squared errors, right?
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Aja
4 months ago
I thought Integer programming was used for optimization, not regression.
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Lindsay
4 months ago
Wait, are we sure it's not Ridge or Lasso?
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Jacquelyne
4 months ago
Agreed, OLS is the go-to method.
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Cordelia
4 months ago
It's definitely Ordinary Least Squares!
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Arminda
5 months ago
I definitely recall that Ordinary Least Squares is the standard method used in linear regression, so I’m leaning towards that option.
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Fatima
5 months ago
I feel like I might confuse the Apriori Algorithm with something else, but it doesn't seem right for this question.
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Nan
5 months ago
I remember practicing a question about regression methods, and I think Ridge and Lasso are more for regularization, not directly for finding coefficients.
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Ruby
5 months ago
I think the method for solving coefficients in linear regression is Ordinary Least Squares, but I'm not completely sure.
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Alethea
5 months ago
Okay, I think I've got this. Enabling the Windows firewall logging should give me the information I need to identify the connections that are being allowed or blocked.
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Avery
5 months ago
The answer has to be in one of the categories shown in Exhibit 1, since that's what the question is asking about. I'm leaning towards C, Keywords, but I'll double-check the other options just to be sure.
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Vicky
5 months ago
I think it might be the Rate Anticipation with Maturity Mismatch. We discussed it in class, but I'm not 100% sure if it specifically applies to both investors and speculators.
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