Quiz in NGEC4

What is the first step in organizing ungrouped data?

• Tally the data

• Arrange the scores in decreasing order

• Arrange the scores in increasing order

• Make a frequency table

In grouped data, what is computed by subtracting the lowest score from the highest?

• Frequency

• Class size

• Range

• Mode

What does CF stand for in a frequency distribution table?

• Class Factor

• Cumulative Frequency

• Class Frequency

• Count Factor

Which of the following best describes how deciles divide a dataset?

• Into 5 equal parts

• Into 10 equal parts

• Into 25 equal parts

• Into 100 equal parts

Which measure divides data into four equal parts?

• Deciles

• Quartiles

• Percentiles

• Mode

Which measure is least affected by extreme values?

• Mean

• Median

• Mode

• Range

Which of the following is NOT a step in computing standard deviation?

• Get the mode

• Square the deviations

• Compute the mean

• Take the square root

What is the midpoint of 30-34?

• 31

• 32

• 33

• 32.5

Which is a bimodal dataset?

• 5, 5, 5, 7

• 5, 7, 7, 7

• 5, 5, 7, 7

• 5, 6, 7, 8

What measure of variability is defined as the average squared deviation from the mean?

• Range

• Mean

• Variance

• Mode