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Exam Code:	D-DS-FN-23
Exam Name:	Dell Data Science Foundations
Certification Provider:	EMC
Free Question Number:	141
Version:	v2025-02-06
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# of Questions views:	4335
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Exam Question List: Question 1: What is one modeling or descriptive statistical function in ...; Question 2: In which lifecycle stage are initial hypotheses formed?...; Question 3: In addition to less data movement and the ability to use lar...; Question 4: To ensure a successful analytic project, which key role can ...; Question 5: Which word or phrase completes the statement; "Adata scienti...; Question 6: Based on the exhibit, what is a likely issue with the data? ...; Question 7: Refer to the exhibit. (Exhibit) You have scored your Naive b...; Question 8: Adisk drive manufacturer has a defect rate of less than 1.5%...; Question 9: Which process in text analysis can be used to reduce dimensi...; Question 10: In a Logistic Regression, the coefficient for "age" equals -...; Question 11: In a Student's t-test, what is the meaning of the p-value?...; Question 12: What is holdout data?; Question 13: Refer to the exhibit. (Exhibit) In the exhibit, a correlogra...; Question 14: You are assigned the task of creating customer profiles for ...; Question 15: In time series analysis, what function is examined to identi...; Question 16: What is the output of the K-means clustering algorithm?...; Question 17: An IT department deployed a spam filter to reduce the amount...; Question 18: Which characteristic applies mainly to Data Science as oppos...; Question 19: Which clause is required by all window functions?...; Question 20: When is a Wilcoxon Rank-Sum test used?...; Question 21: In linear regression, what indicates that an estimated coeff...; Question 22: There are three criterions for big data analytics projects w...; Question 23: Which word or phrase completes the statement; "The intersect...; Question 24: Consider these itemsets: (hat, scarf, coat) (hat, scarf, coa...; Question 25: Based on the exhibit, the table shows the values for the inp...; Question 26: On analyzing the results of a K-means clustering output, you...; Question 27: In text analysis, what makes the corpus representation dynam...; Question 28: What is a good use case for logistic regression?...; Question 29: Assume that you have a data frame in R. Which function would...; Question 30: Which word or phrase completes the statement? Structured dat...; Question 31: You have been assigned to do a study of the daily revenue ef...; Question 32: Refer to the exhibit. (Exhibit) Click on the calculator icon...; Question 33: In a t-test with unknown variance, what values are used to c...; Question 34: You are provided with a dataset with the following attribute...; Question 35: What is a distinct property of Logistic Regression compared ...; Question 36: A study was run to identify general dietary patterns among t...; Question 37: Which activity is performed in the Operationalize phase of t...; Question 38: Before building an ARMA model, how can you determine if the ...; Question 39: After which phase of the data analytics lifecycle should you...; Question 40: What is the output format from the Map function of MapReduce...; Question 41: You are analyzing data in order to build a classifier model....; Question 42: You are using a Logistic Regression model to determine if an...; Question 43: A call center for a large electronics company handles an ave...; Question 44: How are window functions different from regular aggregate fu...; Question 45: You have numeric data for more than 500 observations. You ar...; Question 46: In which lifecycle stage are test and training data sets cre...; Question 47: What type of data is represented in the exhibit? (Exhibit)...; Question 48: If distributed Item-based Collaborative Filtering is an algo...; Question 49: Refer to the exhibit. (Exhibit) You have run a linear regres...; Question 50: A time series of monthly sales indicates a periodic pattern,...; Question 51: Which word or phrase completes the statement? Mahout is to H...; Question 52: In data visualization, which type of chart is recommended to...; Question 53: In data visualization, what is used to focus the audience on...; Question 54: What is the purpose of the process step "parsing" in text an...; Question 55: While having a discussion with your colleague, this person m...; Question 56: You have been assigned to run a linear regression model for ...; Question 57: Refer to the exhibit. (Exhibit) In the exhibit, a correlogra...; Question 58: Since R factors are categorical variables, they are most clo...; Question 59: Refer to the exhibit. (Exhibit) Which type of data issue wou...; Question 60: In a fitted ARIMA(1,2,3) model, how many differences are app...; Question 61: Consider these itemsets: (hat, scarf, coat) (hat, scarf, coa...; Question 62: Refer to the exhibit. (Exhibit) You are asked to write a rep...; Question 63: Which word or phrase completes the statement? Data-ink ratio...; Question 64: Refer to the exhibit. (Exhibit) In the exhibit, the x-axis r...; Question 65: You have been assigned to run a logistic regression model fo...; Question 66: An analyst is searching a corpus of documents for the topic ...; Question 67: You submit a Map Reduce job to a Hadoop cluster. However, yo...; Question 68: Consider the following SQL statement: SELECT employee_id, ye...; Question 69: When would you prefer a Naive Bayes model to a logistic regr...; Question 70: What are the characteristics of Big Data?...; Question 71: The Marketing department of your company wishes to track opi...; Question 72: What are two data categories that represent quantitative dat...; Question 73: Your colleague, who is new to Hadoop, approaches you with a ...; Question 74: What provides the means for matching and manipulating text s...; Question 75: You have plotted the distribution of savings account sizes f...; Question 76: Which activity is performed in the Operationalize phase of t...; Question 77: Refer to the Exhibit. (Exhibit) You are going into a meeting...; Question 78: What describes the data repository represented by the 'A' in...; Question 79: What is required in a presentation for project sponsors?...; Question 80: Which assumption makes the Naïve Bayesian classifier differe...; Question 81: How does Pig's use of a schema differ from that of a traditi...; Question 82: How does an HBase data structure differ from an ANSI standar...; Question 83: Refer to the exhibit. (Exhibit) What provides the decision t...; Question 84: Which Hadoop service is responsible for requesting resources...; Question 85: Refer to the exhibit. (Exhibit) The graph represents an ROC ...; Question 86: Refer to the exhibit. (Exhibit) The exhibit shows four graph...; Question 87: What is a consideration when building decision trees?...; Question 88: You are provided with the following list. Which window funct...; Question 89: Refer to the graphic. (Exhibit) How would you run the MADlib...; Question 90: During a study to understand the population growth of a cert...; Question 91: Which visualization technique should be avoided?...; Question 92: In which phase of the data analytics lifecycle do Data Scien...; Question 93: What describes a true property of Logistic Regression method...; Question 94: On analyzing your time series data you suspect that the data...; Question 95: Assume you are performing an analysis to determine fraud det...; Question 96: A data scientist is asked to implement an article recommenda...; Question 97: Refer to the exhibit. (Exhibit) You are building a decision ...; Question 98: A business colleague who is new to Hadoop approaches you wit...; Question 99: Which function shown in the exhibit is used to calculate the...; Question 100: You are using the Apriori algorithm to determine the likelih...; Question 101: A data scientist is given an R data frame (i.e., empdata) wi...; Question 102: What requests resources from YARN during a MapReduce job?...; Question 103: You are analyzing a time series and want to determine its st...; Question 104: What does a leaf node represent in a decision tree?...; Question 105: Refer to the exhibit. (Exhibit) You have plotted the distrib...; Question 106: In a user-defined aggregate function, what is SFUNC?...; Question 107: Which data asset is an example of semi-structured data?...; Question 108: Refer to the exhibit. (Exhibit) You have scored your Naive b...; Question 109: Consider the following text: "Aren't you glad that there are...; Question 110: What is the difference between the array and list data struc...; Question 111: What is the primary bottleneck in text classification?...; Question 112: You have two tables of customers in your database. Customers...; Question 113: A data scientist is preparing a presentation for a meeting w...; Question 114: Which word or phrase completes the statement? Theater actor ...; Question 115: Refer to the exhibit. (Exhibit) What is the approximate R-sq...; Question 116: In addition to quantitative and technical skills, what is a ...; Question 117: What tasks need to be completed when designing an analytic s...; Question 118: Which data asset is an example of unstructured data?...; Question 119: Which two analytical methods can be used for dealing with ca...; Question 120: You have created a Linear Regression model to predict total ...; Question 121: In time series analysis, what is an indication of a stationa...; Question 122: Consider the following SQL query: SELECT product_id FROM sup...; Question 123: What is the optimal usage scenario for the Hadoop Distribute...; Question 124: You have completed your model and are handing it off to be d...; Question 125: Which analytical method is considered unsupervised?...; Question 126: What is an appropriate data visualization to use in a presen...; Question 127: Which statement about linear regression is correct?...; Question 128: A fair six-sided die is rolled. Let A denote the event that ...; Question 129: You are asked to create a model to predict the total number ...; Question 130: Which chart type is the most effective way to show trends ov...; Question 131: What is LOESS used for?; Question 132: Which word or phrase completes the statement; "Excessive emp...; Question 133: You received 100,000 home loan records and want to quickly d...; Question 134: You are having a discussion with a business colleague. The c...; Question 135: Which word or phrase completes the statement? Business Intel...; Question 136: Your customer provided you with 2, 000 unlabeled records and...; Question 137: When creating a project sponsor presentation, what is the ma...; Question 138: In the Map Reduce framework, what is the purpose of the Map ...; Question 139: You have created a scatter plot using R from household incom...; Question 140: Under which circumstance do you need to implement N-fold cro...; Question 141: Consider a database with 4 transactions: Transaction 1: {che...

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