EMC E20-007 dumps - 100% Pass Guarantee!

A business colleague who is new to Hadoop approaches you with a question. The colleague wants to know the best approach to access their data. The colleague has previously worked extensively with SQL and databases.

Which query interface should be recommended?

A. Hive

B. Pig

C. Howl

D. HBase

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

A. It aggregates the results of the Map function and generates processed output

B. It distributes the input to multiple nodes for processing

C. It writes the output of the Map function to storage

D. It breaks the input into smaller components and distributes to other nodes in the cluster

You are analyzing a time series and want to determine its stationarity. You also want to determine the order of autoregressive models.

How are the autocorrelation functions used?

A. ACF as an indication of stationarity, and PACF for the correlation between Xt and Xt-k not explained by their mutual correlation with X1 through Xk-1.

B. PACF as an indication of stationarity, and ACF for the correlation between Xt and Xt-k not explained by their mutual correlation with X1 through Xk-1.

C. ACF as an indication of stationarity, and PACF to determine the correlation of X1 through Xk-1.

D. PACF as an indication of stationarity, and ACF to determine the correlation of X1 through Xk-1.

You are building a logistic regression model to predict whether a tax filer will be audited within the next two years. Your training set population is 1000 filers. The audit rate in your training data is 4.2%. What is the sum of the probabilities that the model assigns to all the filers in your training set that have been audited?

A. 42.0

B. 4.2

C. 0.42

D. 0.042

Consider the following itemsets: (hat, scarf, coat)

(hat, scarf, coat, gloves)

(hat, scarf, gloves)

(hat, gloves)

(scarf, coat, gloves)

What is the confidence of the rule (hat, scarf) => gloves?

A. 40%

B. 50%

C. 60%

D. 66%