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NEW QUESTION 48 Which of the following value is the measure of dispersion "range" between the scores of ten students in a test. The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.

• A. 0
• B. 1
• C. 2
• D. 3

Answer: A Explanation: The correct answer is: 60 Range is the interval between the highest and the lowest score. Range is a measure of variability or scatteredness of the varieties or observations among themselves and does not give an idea about the spread of the observations around some central value. Symbolically R = Hs - Ls. Where R = Range; Hs is the 'Highest score' and Ls is the Lowest Score. The scores of ten students in a test are: 17, 23, 30, 36, 45, 51, 58, 66, 72, 77. The highest score is 77 and the lowest score is 17. So the range is the difference between these two scores Range = 77 - 17 = 60   NEW QUESTION 49 Which of the following describes a programming language and free software environment for statistical computing and graphics?

• A. SAS.
• B. Microsoft Excel.
• C. Microsoft Power BI.
• D. R.

Answer: D   NEW QUESTION 50 A customer list from a financial services company is shown below: A data analyst wants to create a likely-to-buy score on a scale from 0 to 100, based on an average of the three numerical variables: number of credit cards, age, and income. Which of the following should the analyst do to the variables to ensure they all have the same weight in the score calculation?

• A. Calculate the percentiles of the variables.
• B. Normalize the variables.
• C. Calculate the standard deviations of the variables.
• D. Recode the variables.

Answer: C   NEW QUESTION 51 Which one of the following would not normally be considered a summary statistic?

• A. Standard deviation.
• B. Mean.
• C. z-score.
• D. Variance.

Answer: C Explanation: Simply put, a z-score (also called a standard score) gives you an idea of how far from the mean a data point is. But more technically it's a measure of how many standard deviations below or above the population mean a raw score is. A z-score can be placed on a normal distribution curve.   NEW QUESTION 52 ...... 2023 Latest Pass4cram DA0-001 PDF Dumps and DA0-001 Exam Engine Free Share: https://drive.google.com/open?id=10Xcqbr_NIxkNnrczJOjCshotK5CHxf-L