Vous pouvez télécharger tout d'abord une partie de Q&A Certification EMC E20-007 pour tester si Pass4Test est vraiment professionnel. Nous pouvons vous aider à réussir 100% le test EMC E20-007. Si malheureusement, vous ratez le test, votre argent sera 100% rendu.
Le test EMC E20-007 est test certification très répandu dans l'industrie IT. Vous pourriez à améliorer votre niveau de vie, l'état dans l'industrie IT, etc. C'est aussi un test très rentable, mais très difficile à réussir.
Code d'Examen: E20-007
Nom d'Examen: EMC (Data Science and Big Data Analytics)
Questions et réponses: 165 Q&As
Aujoud'hui, dans cette indutrie IT de plus en plus concurrentiel, le Certificat de EMC E20-007 peut bien prouver que vous avez une bonne concurrence et une space professionnelle plus grande à atteindre. Dans le site Pass4Test, vous pouvez trouver un outil de se former très pratique. Nos IT experts vous offrent les Q&As précises et détaillées pour faciliter votre cours de préparer le test EMC E20-007 qui vous amenera le succès du test EMC E20-007, au lieu de traivailler avec peine et sans résultat.
Le produit de Pass4Test que vous choisissez vous met le pied sur la première marche du pic de l'Industrie IT, et vous serez plus proche de votre rêve. Les matériaux offerts par Pass4Test peut non seulement vous aider à réussir le test EMC E20-007, mais encore vous aider à se renforcer les connaissances professionnelles. Le service de la mise à jour pendant un an est aussi gratuit pour vous.
Au 21er siècle, il manque encore grand nombreux de gens qualifié de IT. Le test Certificat IT est une bonne façon à examiner les hommes de talent. Ce n'est pas un test facile à réussir. Un bon choix de formation est une assurance pour le succès de test. Le test simulation est bien proche que test réel. Vous pouvez réussir 100%, bien que ce soit la première à participer le test.
E20-007 Démo gratuit à télécharger: http://www.pass4test.fr/E20-007.html
NO.1 Your company has 3 different sales teams. Each team's sales manager has developed incentive offers
to increase the size of each sales transaction. Any sales manager whose incentive program can be
shown to increase the size of the average sales transaction will receive a bonus.
Data are available for the number and average sale amount for transactions offering one of the incentives
as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a
demonstrable increase in the average sale amount. Which analytical technique would be appropriate in
this situation?
A. One-way ANOVA
B. Multi-way ANOVA
C. Student's t-test
D. Wilcoxson Rank Sum Test
Answer: A
certification EMC certification E20-007 E20-007 E20-007
NO.2 When would you use GROUP BY ROLLUP clause in your OLAP query?
A. where all subtotals and grand totals are to be included in the output
B. where only the subtotals are to be included in the output
C. where only the grand totals are to be included in the output
D. where only specific subtotals and grand totals for a combination of variables are to be included in the
output
Answer: A
certification EMC E20-007 examen E20-007 E20-007 E20-007
NO.3 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.
A. Na ve Bayesian classifier
B. Linear regression
C. Logistic regression
D. K-means clustering
Answer: A
EMC certification E20-007 certification E20-007 E20-007 examen
NO.4 In which lifecycle stage are test and training data sets created?
A. Model building
B. Model planning
C. Discovery
D. Data preparation
Answer: A
EMC certification E20-007 E20-007 certification E20-007
NO.5 You are using the Apriori algorithm to determine the likelihood that a person who owns a home has a
good credit score. You have determined that the confidence for the rules used in the algorithm is > 75%.
You calculate lift = 1.011 for the rule, "People with good credit are homeowners". What can you determine
from the lift calculation?
A. Support for the association is low
B. Leverage of the rules is low
C. The rule is coincidental
D. The rule is true
Answer: C
EMC E20-007 examen certification E20-007 E20-007 examen
NO.6 The web analytics team uses Hadoop to process access logs. They now want to correlate this data
with structured user data residing in a production single-instance JDBC database. They collaborate with
the production team to import the data into Hadoop. Which tool should they use?
A. Sqoop
B. Pig
C. Chukwa
D. Scribe
Answer: A
certification EMC certification E20-007 E20-007 E20-007 E20-007 examen
NO.7 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}
The minimum support is 25%. Which rule has a confidence equal to 50%?
A. {bread,milk} => {cheese}
B. {bread} => {milk}
C. {juice} => {soda}
D. {bread} => {cheese}
Answer: D
certification EMC E20-007 examen certification E20-007 certification E20-007 E20-007 examen
NO.8 You are using MADlib for Linear Regression analysis. Which value does the statement return?
SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;
A. Goodness of fit
B. Coefficients
C. Standard error
D. P-value
Answer: A
EMC examen E20-007 examen certification E20-007 E20-007 examen E20-007 examen
NO.9 What would be considered "Big Data"?
A. An OLAP Cube containing customer demographic information about 100,000,000 customers
B. Daily Log files from a web server that receives 100,000 hits per minute
C. Aggregated statistical data stored in a relational database table
D. Spreadsheets containing monthly sales data for a Global 100 corporation
Answer: B
certification EMC E20-007 E20-007 certification E20-007
NO.10 In R, functions like plot() and hist() are known as what?
A. generic functions
B. virtual methods
C. virtual functions
D. generic methods
Answer: B
EMC E20-007 E20-007 E20-007 examen
NO.11 Your colleague, who is new to Hadoop, approaches you with a question. They want to know how best
to access their data. This colleague has a strong background in data flow languages and programming.
Which query interface would you recommend?
A. Pig
B. Hive
C. Howl
D. HBase
Answer: A
EMC E20-007 E20-007 certification E20-007 E20-007
NO.12 Under which circumstance do you need to implement N-fold cross-validation after creating a
regression model?
A. There is not enough data to create a test set.
B. The data is unformatted.
C. There are missing values in the data.
D. There are categorical variables in the model.
Answer: A
EMC examen E20-007 E20-007 E20-007
NO.13 Which type of numeric value does a logistic regression model estimate?
A. Probability
B. A p-value
C. Any integer
D. Any real number
Answer: A
EMC E20-007 examen E20-007 examen certification E20-007
NO.14 Which data asset is an example of quasi-structured data.?
A. Webserver log
B. XML data file
C. Database table
D. News article
Answer: A
EMC E20-007 E20-007 examen
NO.15 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%?
A. {cheese} => {bread}
B. {juice} => {cheese}
C. {milk} => {soda}
D. {soda} => {milk}
Answer: A
EMC examen E20-007 examen E20-007 E20-007 examen
NO.16 In data visualization, what is used to focus the audience on a key part of a chart?
A. Emphasis colors
B. Detailed text
C. Pastel colors
D. A data table
Answer: A
EMC E20-007 E20-007 examen E20-007 E20-007
NO.17 What does the R code
z <- f[1:10, ]
do?
A. Assigns the first 10 rows of f to the vector z
B. Assigns the 1st 10 columns of the 1st row of f to z
C. Assigns a sequence of values from 1 to 10 to z
D. Assigns the 1st 10 columns to z
Answer: A
certification EMC certification E20-007 certification E20-007 E20-007 examen
NO.18 What is an appropriate data visualization to use in a presentation for an analyst audience?
A. Pie chart
B. Area chart
C. Stacked bar chart
D. ROC curve
Answer: D
EMC E20-007 examen certification E20-007
NO.19 When creating a presentation for a technical audience, what is the main objective?
A. Show that you met the project goals
B. Show how you met the project goals
C. Show if the model will meet the SLA
D. Show the technique to be used in the production environment
Answer: B
EMC certification E20-007 certification E20-007 E20-007
NO.20 Which word or phrase completes the statement? Data-ink ratio is to data visualization as __________ .
A. Confusion matrix is to classifier
B. Data scientist is to big data
C. Seasonality is to ARIMA
D. K-means is to Naive Bayes
Answer: A
EMC E20-007 certification E20-007 E20-007
Selon les anciens test EMC E20-007, la Q&A offerte par Pass4Test est bien liée avec le test réel.
没有评论:
发表评论