D-DS-FN-23試験無料問題集「EMC Dell Data Scientist and Big Data Analytics Foundations 2023 認定」

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In a fitted ARIMA(1,2,3) model, how many differences are applied?

What is required in a presentation for business analysts?

Refer to the exhibit.

You ran a linear regression, and the final output is seen in the exhibit. Based only on the information in the exhibit and an acceptable confidence level of 95%, how would you interpret the interaction of variable D with the dependent variable?

An analyst is searching a corpus of documents for the topic "solid state disk". As shown in the graphic, Table A provides the inverse document frequency for each term across the corpus.
Table B provides each term's frequency in four documents selected from the corpus.

Based on the four documents, which document is most relevant to the analyst's search?

You have two tables of customers in your database. Customers in cust_table_1 were sent an e-mail promotion last year, and customers in cust_table_2 received a newsletter last year.
Customers can only be entered in once per table. You want to create a table that includes all customers, and any of the communications they received last year.
Which type of join would you use for this table?

A data scientist wants to predict the probability of death from heart disease based on three risk factors:
age, gender, and blood cholesterol level.
What is the most appropriate method for this project?

Which word or phrase completes the statement? Data-ink ratio is to data visualization as _________.

What provides an extensive library of algorithm building tools to be used with the Hadoop ecosystem?

In time series analysis, what is an indication of a stationary sequence?

In the Map Reduce framework, what is the purpose of the Reduce function?

Refer to the exhibit.

In the exhibit, a correlogram is provided based on an autocorrelation analysis of a sample dataset.
What can you conclude based only on this exhibit?

Which type of numeric value does a logistic regression model estimate?

The average purchase size from your online sales site is $17, 200. The customer experience team believes a certain adjustment of the website will increase sales.
A pilot study on a few hundred customers showed an increase in average purchase size of $1.47, with a significance level of p=0.1. The team runs a larger study, of a few thousand customers.
The second study shows an increased average purchase size of $0.74, with a significance level of 0.03.
What is your assessment of this study?

You have scored your Naïve Bayesian Classifier model on "hold out" test data for cross validation. You have determined the way the samples scored and have tabulated them as shown in the exhibit.

What are the Precision and Recall rates of the model?

Which key role for a successful analytic project can consult and advise the project team on the value of end results and how these will be used on a day-to-day basis?

Refer to the Exhibit.

In the Exhibit. For effective visualization, what is the chart's primary flaw?

What is a distinct property of Logistic Regression compared with Linear Regression?

In data visualization, what is used to focus the audience on a key part of a chart?

Which chart type is intended to display correlations between sets of numeric data?

You are testing two new weight-gain formulas for puppies. The test gives the results: Control group: 1% weight gain Formula A. 3% weight gain Formula B. 4% weight gain A one-way ANOVA returns a p-value = 0.027
What can you conclude?

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トータル 300 問