SSS2 Math Lesson 14 Examination- Vectors

Which of the following is not a measure of central tendency?

A) Mean

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B) Median

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C) Mode

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D) Range

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The mean of the numbers \(2, 4, 6, 8, 10\) is:

A) 4

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B) 6

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C) 8

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D) 5

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The middle value of an ordered data set is called the:

A) Mean

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B) Mode

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C) Median

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D) Range

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The most frequently occurring value in a data set is the:

A) Median

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B) Mean

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C) Range

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D) Mode

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If the data set is \(3, 5, 7, 7, 9, 11, 13\), the mode is:

A) 9

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B) 11

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C) 13

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D) 7

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For the data \(4, 8, 6, 2, 10\), the median is:

A) 6

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B) 6

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C) 5

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D) 7

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The formula for the mean of \(n\) values \(x_1, x_2, \ldots, x_n\) is:

A) \(\dfrac{\sum x}{n-1}\)

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B) \(\dfrac{\sum x}{n}\)

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C) \(\dfrac{\sum x^2}{n}\)

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D) \(\dfrac{n}{\sum x}\)

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If all numbers in a data set are the same, then:

A) Mean, median and mode are different

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B) Mean, median and mode are equal

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C) Only mode exists

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D) Only mean exists

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Which measure of central tendency is most affected by extreme values?

A) Median

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B) Mode

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C) Mean

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D) Range

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The median class in a grouped frequency distribution is the class:

A) With the highest frequency

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B) At the beginning of the data

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C) Containing the middle value of the data

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D) With the lowest frequency

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Grouped data is obtained by:

A) Recording raw observations

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B) Arranging data into class intervals

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C) Calculating averages

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D) Drawing graphs

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The difference between the upper and lower class boundaries of a class is called:

A) Class width

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B) Class limit

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C) Class interval

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D) Range

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In the class interval \(10-19\), the lower class limit is:

A) 10

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B) 19

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C) 9.5

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D) 20

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In the class interval \(30-39\), the upper class boundary is:

A) 39

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B) 40

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C) 39.5

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D) 38.5

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The mid-point of the class interval \(20-29\) is:

A) 23

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B) 24.5

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C) 25

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D) 29.5

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The frequency of a class represents:

A) The sum of all class intervals

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B) The size of the class width

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C) The number of observations in that class

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D) The midpoint of the class

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The cumulative frequency of a class is:

A) The frequency of the class only

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B) The total of frequencies up to that class

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C) The product of frequencies

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D) The difference between successive frequencies

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A table showing classes and their frequencies is called:

A) Histogram

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B) Frequency distribution table

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C) Bar chart

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D) Ogive

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The sum of frequencies in a grouped frequency table is equal to:

A) The class width

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B) The median

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C) The total number of observations

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D) The range

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If the highest value in a data set is 87 and the lowest is 12, the range is:

A) 75

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B) 85

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C) 99

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D) 100

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The cumulative frequency of a class is:

A) The number of observations in that class

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B) The total number of observations up to that class

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C) The average of the class limits

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D) The frequency of the next class

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In a cumulative frequency table, the last cumulative frequency is equal to:

A) The median

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B) The mean

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C) The total number of observations

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D) The mode

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A cumulative frequency graph is also called:

A) Histogram

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B) Pie chart

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C) Ogive

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D) Bar chart

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To draw a cumulative frequency graph, we plot:

A) Frequency against lower class limits

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B) Cumulative frequency against upper class limits

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C) Frequency against class midpoints

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D) Cumulative frequency against midpoints

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Which measure of central tendency is best obtained from an ogive?

A) Mean

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B) Mode

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C) Median

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D) Range

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Which of the following is not true about cumulative frequency?

A) It is always increasing

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B) It is used to locate the median

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C) It can be shown graphically

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D) It decreases as we move to higher classes

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The median class in a cumulative frequency distribution is the class:

A) With the highest frequency

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B) With the lowest frequency

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C) Containing the midpoint of the class intervals

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D) Where the middle observation lies

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If the total frequency is 100, the median lies at the:

A) 100th observation

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B) 75th observation

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C) 25th observation

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D) 50th observation

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The interquartile range can be determined from:

A) Histogram

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B) Bar chart

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C) Cumulative frequency curve

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D) Pie chart

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The lower quartile corresponds to the:

A) \( \frac{1}{4} \) of the total frequency

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B) \( \frac{1}{2} \) of the total frequency

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C) \( \frac{3}{4} \) of the total frequency

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D) The total frequency

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SSS2 Math Lesson 14 Examination- Vectors

SSS2 Math Lesson 14 Examination- Vectors

Noah Wasiu September 11, 2025

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