1. Which of the following measures the spread of data?

  1. Mean
  2. Median and interquartile range
  3. First and third quartiles
  4. Standard deviation and variance

Answer

2. The middle value in a set of observed values is:

  1. Mode
  2. Range
  3. Median
  4. Mean

Answer and Explanation

3. The simplest measurement of central tendency is:

  1. Mean
  2. Median
  3. Mode
  4. Standard deviation

Answer and Explanation

4. To identify the shape of univariate data, what type of graph would be the most useful?

  1. Histogram
  2. Scatter plot
  3. Bar chart
  4. Pie chart

Answer and Explanation

5. Sample surveys are types of

  1. Secondary data
  2. Tertiary data
  3. Manipulated data
  4. Primary data

Answer and Explanation

6. The degree of freedom can be calculated using the formula

  1. (n-2)
  2. (n+1)
  3. (n-1/2)
  4. (n-1)

Answer and Explanation

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