DA0-001 Practice Test

DA0-001 Practice Test practice questions, page 13 of 17, with answer review and explanations.

Question 61

A cereal manufacturer wants to determine whether the sugar content of its cereal has increased over the years. Which of the following is the appropriate descriptive statistic to use?

  1. Frequency
  2. Percent change
  3. Variance
  4. Mean

Question 62

The process of performing initial investigations on data to spot outliers, discover patterns, and test assumptions with statistical insight and graphical visualization is called:

  1. a t-test.
  2. a performance analysis.
  3. an exploratory data analysis.
  4. a link analysis.

Question 63

Different people manually type a series of handwritten surveys into an online database. Which of the following issues will MOST likely arise with this data? (Choose two.)

  1. Data accuracy
  2. Data constraints
  3. Data attribute limitations
  4. Data bias
  5. Data consistency
  6. Data manipulation

Question 64

Which of the following data sampling methods involves dividing a population into subgroups by similar characteristics?

  1. Systematic
  2. Simple random
  3. Convenience
  4. Stratified

Question 65

A data analyst must separate the column shown below into multiple columns for each component of the name: Which of the following data manipulation techniques should the analyst perform?

  1. Imputing
  2. Transposing
  3. Parsing
  4. Concatenating