Free E20-007 Exam Dumps Preview

Which chart type is the most effective way to show trends over time?

What is an appropriate data visualization to use in a presentation to a project sponsor?

Which word or phrase completes the statement? Structured data is to OLAP data as quasi-structured data is to____

Refer to the exhibit.

You have plotted the distribution of savings account sizes for your bank.

How would you proceed, based on this distribution?

A data scientist is given an R data frame, "empdata", with the columns Age, Salary, Occupation, Education, and Gender. The data scientist would like to examine only the Salary and Occupation columns for ages greater than 40.

Which command extracts the appropriate rows and columns from the data frame?

In linear regression, what indicates that an estimated coefficient is significantly different than zero?

Refer to the Exhibit.

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

Consider a database with 4 transactions:

Transaction 1: {cheese, bread, milk}

Transaction 2: {soda, bread, milk}

Transaction 3: {cheese, bread}

Transaction 4: {cheese, soda, juice} You decide to run the association rules algorithm where minimum support is 50%.

Which rule has a confidence at least 50%?

You have been assigned to perform a study of the daily revenue effect of a pricing model of online transactions.

When is the analytics lifecycle considered completed?

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

In which phase of the analytic lifecycle would you expect to spend most of the project time?

Which SQL OLAP extension provides all possible grouping combinations?

You have plotted the distribution of savings account sizes for a bank.

Based on the distribution shown in the exhibit, how would you proceed?

What is the purpose of the process step "parsing" in text analysis?

In MADlib what does MAD stand for?

Refer to the Exhibit.

You are going into a meeting where you anticipate your manager will have a question on your dataset.
Specifically, your manager will want to know about customers that are classified as renters with a good credit status.

In order to prepare for the meeting, you create a rule: RENTER => GOOD CREDIT.

What is the confidence of this rule?

Which word or phrase completes the statement; "A theater actor is to `artistic and expressive' as a data scientist is to ____________."
?

Since R factors are categorical variables, they are most closely related to which data classification level?

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?

Refer to the exhibit.

After analyzing a dataset, you report findings to your team:

1. Variables A and C are significantly and positively impacting the dependent variable.

2. Variable B is significantly and negatively impacting the dependent variable.

3. Variable D is not significantly impacting the dependent variable.

After seeing your findings, the majority of your team agreed that variable B should be positively impacting the dependent variable.

What is a possible reason the coefficient for variable B was negative and not positive?

Imagine you are trying to hire a Data Scientist for your team.
In addition to technical ability and quantitative background, which additional essential trait would you look for in people applying for this position?

Refer to the Exhibit.

In the Exhibit, the table shows the values for the input Boolean attributes "A", "B", and "C". It also shows the values for the output attribute "class".

Which decision tree is valid for the data?

Which word or phrase completes the statement? Emphasis color is to standard color as _______ .

You are performing a market basket analysis using the Apriori algorithm.

Which measure is a ratio describing the how many more times two items are present together than would be expected if those two items are statistically independent?

Which of the following is an example of quasi-structured data?

Refer to the exhibit.

In the exhibit, a correlogram is provided based on an autocorrelation analysis of a sample dataset.

What can you conclude from only this exhibit?

Consider a scale that has five (5) values that range from "not important" to "very important".

Which data classification best describes this data?

When is the GROUP BY ROLLUP clause used in an OLAP query?

Assume you are performing an analysis to determine fraud detection on credit card usage. You will need to

ensure higher-risk transactions. These may indicate that fraudulent credit card activity is retained in your data for analysis and not dropped as outliers during pre-processing.

What is the approach for loading data into the analytical sandbox for this analysis?

A data scientist plans to classify the sentiment polarity of 10, 000 product reviews collected from the Internet. What is the most appropriate model to use? Suppose labeled training data is available.