Statistics Quiz

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Questions and Answers

What is the formula for calculating the mean of grouped data?

  • $\bar{x} = \frac{\sum f \cdot x}{\sum f}$ (correct)
  • $\bar{x} = \frac{\sum f \cdot x}{N}$
  • $\bar{x} = \frac{\sum x}{N}$
  • $\bar{x} = \frac{\sum x}{\sum f}$

What are the measures of central tendency for ungrouped data?

  • Percentile, quartile, decile
  • Mean, median, mode (correct)
  • Range, variance, standard deviation
  • Skewness, kurtosis, frequency

What is the graphical representation used for representing cumulative frequency?

  • Bar graph
  • Ogive (correct)
  • Frequency polygon
  • Histogram

What does the cumulative frequency distribution represent?

<p>Sum of frequencies up to and including the current class interval (B)</p> Signup and view all the answers

Which graph is used to represent the relationship between two continuous variables in statistics?

<p>Scatter plot (D)</p> Signup and view all the answers

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