Statistics Class 10 - Frequency Distribution
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Questions and Answers

What is the formula used to calculate the range of a dataset in this lesson?

  • R = LS - HS
  • R = HS / LS
  • R = (HS + LS) / 2
  • R = HS - LS (correct)

    • Which of the following variables represents the number of classes in the frequency distribution table?

  • LS
  • K (correct)
  • HS
  • R

    • What is the primary purpose of calculating the class size in this lesson?

  • To group the data into intervals for analysis (correct)
  • To determine the frequency of each class
  • To find the midpoint of each class interval
  • To determine the average value of the dataset

    • Which of the following is NOT a variable used in the calculations in this lesson?

    <p>SD (A)</p> Signup and view all the answers

    What is likely the purpose of determining the class midpoint in this lesson?

    <p>To calculate the average value of each class interval (D)</p> Signup and view all the answers

    Which measure of central tendency is most influenced by extreme values in a dataset?

    <p>Mean (B)</p> Signup and view all the answers

    A dataset contains the following values: {1, 2, 3, 4, 5, 5, 5}. What is the mode of this dataset?

    <p>5 (A)</p> Signup and view all the answers

    Which measure of central tendency would be most appropriate for analyzing the typical income of a neighborhood where a few residents have extremely high incomes, while most residents have moderate incomes?

    <p>Median (C)</p> Signup and view all the answers

    A survey asks participants to rate their satisfaction with a product on a scale of 1 to 5, with 1 being the least satisfied and 5 being the most satisfied. What measure of central tendency would be most suitable for analyzing the results of this survey?

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

    A researcher is studying the average age of students in a university. Which measure of central tendency would be most appropriate to use, assuming there are no significant outliers in the data?

    <p>Mean (C)</p> Signup and view all the answers

    Flashcards

    Range (R)

    The difference between the highest and lowest scores in a dataset.

    Class Size (PS)

    The size of each interval in a frequency distribution table.

    Number of Classes (K)

    The total number of intervals or classes in a frequency distribution table.

    Class Interval (CI)

    A specific interval of values used to group data in a frequency distribution.

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    Class Midpoint

    The value that lies in the middle of a class interval.

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    Mean

    The average of all values in a dataset, calculated by dividing the sum by the number of values.

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    Median

    The middle value in an ordered dataset; if even, average the two middle values.

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    Mode

    The value that appears most frequently in a dataset.

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    Sensitivity to Outliers

    Mean is affected by extreme values, while median is less sensitive.

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    Choosing Measures

    Select mean for symmetrical data, median for outliers, and mode for most common value.

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