Mathematics Form 4 KSSM : Chapter 8

Find the median of these numbers:
4, 2, 7, 4, 3

• 2
• 5
• 7
• 4

What is the mean?

• happening the most

• the number in the middle

• biggest-smallest

• the average

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

Four data sets are shown below.

Set 1: {10, 19, 38, 50, 51}

Set 2: {5, 21, 26, 39, 51}

Set 3: {9, 38, 50, 50, 51}

Set 4: {5, 28, 28, 28, 51}

Which data set has the largest standard deviation?

• Set 1

• Set 2

• Set 3

• Set 4

Identify the distribution for the yellow box plot.

• Symmetric

• Right-skewed

• Left-skewed

The diagram below shows a box plot. Determine the interquartile range.

• 10

• 15

• 20

• 25

What does this symbol represents?

• Data

• Mode

• Variance

• Mean

If the standard deviation of a data set is 4, what is the variance?

• 2
• 16
• 4

The salary of the employees in the office were RM15,000, RM 18,000, RM 16,000, RM14,000, RM 90,000 and

RM 17,000. What is the best measure of the central tendency of the salaries?

• Mean

• Median

• Mode

• Range