The latest CompTIA Data+ DA0-001 certification actual real practice exam question and answer (Q&A) dumps are available free, which are helpful for you to pass the CompTIA Data+ DA0-001 exam and earn CompTIA Data+ DA0-001 certification.
Table of Contents
- DA0-001 Question 71
- Exam Question
- Correct Answer
- DA0-001 Question 72
- Exam Question
- Correct Answer
- Explanation
- DA0-001 Question 73
- Exam Question
- Correct Answer
- DA0-001 Question 74
- Exam Question
- Correct Answer
- DA0-001 Question 75
- Exam Question
- Correct Answer
- DA0-001 Question 76
- Exam Question
- Correct Answer
- DA0-001 Question 77
- Exam Question
- Correct Answer
- Explanation
- DA0-001 Question 78
- Exam Question
- Correct Answer
- DA0-001 Question 79
- Exam Question
- Correct Answer
- DA0-001 Question 80
- Exam Question
- Correct Answer
DA0-001 Question 71
Exam Question
Analyzing a data point, you find that the point is 1 standard deviation above the mean.
What is the z-score for this data point?
A. -0.5
B. 0.5
C. 1
D. -1
Correct Answer
C. 1
DA0-001 Question 72
Exam Question
A data analyst wants to create “Income Categories” that would be calculated based on the existing variable “Income”. The “Income Categories” would be as follows:
- Income category 1: less than $1.
- Income category 2: more than $1 and less than $20,000.
- Income category 3: more than $20,001 and less than $40,000.
- Income category 4: more than $40,001.
Which of the following data manipulation techniques should the data analyst use to create “Income Categories”?
A. Data merge
B. Derived variables
C. Data blending
D. Data append
Correct Answer
B. Derived variables
Explanation
Derived variables are variables that you create by calculating or categorizing variables that already exist in your data set. Data merge is incorrect. Data merging is the process of combining two or more data sets into a single data set. Data blending is incorrect. Data blending involves pulling data from different sources and creating a single, unique, dataset for visualization and analysis.
Data append is incorrect. A data append is a process that involves adding new data elements to an existing database.
DA0-001 Question 73
Exam Question
What type of data is best suited for display using a tree map?
A. Time series data
B. Numeric data
C. Nested data
D. Text data
Correct Answer
C. Nested data
DA0-001 Question 74
Exam Question
How many US. states currently have data breach notification laws?
A. 49
B. 45
C. 38
D. 50
Correct Answer
D. 50
DA0-001 Question 75
Exam Question
Which one of the following R values shows strongest positive correlation between two variables?
A. 0
B. 1.6
C. 0.9
D. -0.4
Correct Answer
C. 0.9
DA0-001 Question 76
Exam Question
What type of policy defines an individual’s responsibilities when accessing, using, sharing, and removing organizational data?
A. Acceptable Use Policy (AUP)
B. Privacy policy
C. Data Usage Policy.
D. Data Integrity Policy.
Correct Answer
A. Acceptable Use Policy (AUP)
DA0-001 Question 77
Exam Question
The sales grocery store had an average of $8000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected, and the sample mean was $8000 per day.
The correct null and alternative hypotheses to test whether there has been a significant increase are
A. Null Sample mean is $8000; Alternative Sample mean is greater than or equal to $8000.
B. Null Sample mean is $8000; Alternative Sample mean is greater than $8000.
C. Null Population mean is $8000; Alternative; Population mean is greater than or equal to $8000.
D. Null Population mean is $8000; Alternative; Population mean is greater than $8000.
Correct Answer
D. Null Population mean is $8000; Alternative; Population mean is greater than $8000.
Explanation
Since you are trying to determine whether sales increased above the current average of $8000, the population mean for the null hypothesis is $8000; whereas the mean for the alternative hypothesis is greater than $8000. Hypotheses are always stated in terms of population you are working with, ruling out options A and B. The test is whether sales are higher than the average of $8000 per day, which rules out option C.
DA0-001 Question 78
Exam Question
How many variables may be shown in a simple pie chart?
A. 4
B. 3
C. 2
D. 1
Correct Answer
D. 1
DA0-001 Question 79
Exam Question
A data analyst for a media company needs to determine the most popular movie genre.
Given the table below:
| MovieID | Name | Genre | Actors | Rating |
|---|---|---|---|---|
| 01 | Ghost Writer | Comedy, Actions | Joshua Wellington, Susana Summons | 6.5 |
| 02 | Life of Suffering | Drama, Foreign, Historical | Shelly May, Rita Moralle, Ethan Warner, Sean Houser | 7.2 |
Which of the following must be done to the Genre column before this task can be completed?
A. Append
B. Merge
C. Concatenate
D. Delimit
Correct Answer
D. Delimit
DA0-001 Question 80
Exam Question
Which of the following is the correct data type for text?
A. Boolean
B. String
C. Integer
D. Float
Correct Answer
B. String