Measures of Central Tendency Quiz
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Questions and Answers

What is the formula for calculating the mean?

  • Mean = Sum of all entries + Number of entries
  • Mean = Sum of all entries * Number of entries
  • Mean = Sum of all entries / Number of entries (correct)
  • Mean = Sum of all entries - Number of entries

    • In the statement 'The average price of an ounce of gold is 21,000Php,' what type of average is being described?

  • Standard deviation
  • Mode
  • Median
  • Mean (correct)

    • Which measure of central tendency uses the exact value of each entry?

  • Mode
  • Median
  • Mean (correct)
  • Range

    • What is the average miles per gallon on the highway for the Zippy car?

    <p>39 miles (A)</p> Signup and view all the answers

    What is the minimum average score Linda needs in biology to graduate with a B?

    <p>80 to 89 average (A)</p> Signup and view all the answers

    What can be inferred about a population if the measure of skewness is positive?

    <p>The population is positively skewed (B)</p> Signup and view all the answers

    What is the mean of the given data set?

    <p>80 (C)</p> Signup and view all the answers

    How is the mean of a sample distribution denoted?

    <p>$x - bar$ (D)</p> Signup and view all the answers

    What is the symbol used to represent the mean of the entire population?

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

    What is the median of the data set 19, 19, 27, 28, 18, 35?

    <p>23 (A)</p> Signup and view all the answers

    How is the median calculated for an even number of data values?

    <p>$rac{ ext{Sum of middle two values}}{2}$ (A)</p> Signup and view all the answers

    What does the notation $rac{ ext{Sum of all given x values}}{n}$ represent?

    <p>Mean of a sample distribution (B)</p> Signup and view all the answers

    Which symbol is used to represent the mean in a sample distribution?

    <p>$ar{x}$ (D)</p> Signup and view all the answers

    What does the median represent in a distribution?

    <p>The center or middle score within a distribution (A)</p> Signup and view all the answers

    Which statistic represents the mean in a sample distribution?

    <p>$x - bar$ (C)</p> Signup and view all the answers

    What should be done before finding the median in a distribution?

    <p>$ ext{Order the data from smallest to largest}$ (D)</p> Signup and view all the answers

    Which measure of central tendency describes the most frequently occurring value in a set of data?

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

    If a data set has outliers, which measure of central tendency is least affected by them?

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

    What is the measure of central location that is not influenced by extreme values or outliers in a data set?

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

    Which measure of central tendency is the sum of all data values divided by the number of data points in the set?

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

    What measure of central location can be affected by extreme values and is not always a good representation of the center of the data set?

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

    Which measure of central tendency provides the balance point of the data set but can be strongly affected by outliers?

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

    What is the formula for calculating the mean of a sample distribution?

    <p>$X = \frac{\sum X}{N}$ (A)</p> Signup and view all the answers

    What does the symbol $X$ represent in the formula for finding the mean?

    <p>Average score of a distribution (A)</p> Signup and view all the answers

    What does the symbol $\sum X$ represent in the formula for finding the mean?

    <p>Sum of all items/scores (C)</p> Signup and view all the answers

    Which measure of central tendency uses the exact value of each entry?

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

    In a normal distribution, what is true about the mean, median, and mode?

    <p>They are all equal (C)</p> Signup and view all the answers

    Which of the following represents the center or middle score within a distribution?

    <p>$\sum fM$ (A)</p> Signup and view all the answers

    What is the most frequent score within a distribution called?

    <p>$\sum f$ (A)</p> Signup and view all the answers

    What is Mode in terms of a distribution?

    <p>The most frequent score within a distribution (A)</p> Signup and view all the answers

    What does $N$ represent in the formula for calculating the mean?

    <p>Total number of cases (C)</p> Signup and view all the answers

    What does Mean represent in terms of a distribution?

    <p>The average score of a distribution (D)</p> Signup and view all the answers

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