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WorksheetsIB Business Management - BMT - Descriptive Statistics Quiz
Total questions: 25
Worksheet time: 8mins
The mean is best defined as:
The most frequently occurring value
The middle value when data are ranked
The sum of all values divided by the number of values
The difference between the highest and lowest values
The mode is most useful when:
The data is evenly distributed
You want to find the most common item or category
Outliers are present in the dataset
The data is continuous
The median is particularly valuable because:
It is unaffected by extreme values (outliers)
It shows the spread of the data
It highlights the most common value
It always equals the mean in a dataset
A set of salaries: 1,000; 1,200; 1,200; 50,000. Which measure gives the most representative central tendency?
Mean
Mode
Median
Range
Which central tendency measure is least useful for nominal data (e.g., favourite brand)?
Mean
Mode
Median
Both mean and median
Which type of chart is best for comparing discrete categories?
Line graph
Bar chart
Pie chart
Histogram
A pie chart is most effective when:
Showing changes over time
Displaying proportions of a whole
Comparing categories with different scales
Showing data trends
A limitation of pie charts is that they:
Can only be used with qualitative data
Cannot display percentages
Are difficult to interpret when too many categories exist
Cannot show proportions visually
Which visual would best represent market share of competing firms?
Bar chart
Pie chart
Line graph
Scatter plot
In a bar chart, the y-axis usually represents:
Categories
Frequency or values
Percentages of a whole
Time periods
Infographics are particularly useful because they:
Only use numerical data
Present data in a visually engaging and simplified way
Focus on exact calculations
Eliminate the need for statistics
Which of the following is a limitation of infographics in business reports?
They make complex data more understandable
They may oversimplify and mislead if poorly designed
They combine text and visuals
They appeal to non-experts
A business wants to communicate survey results quickly and clearly to a broad audience. Which presentation tool is most suitable?
Bar chart
Infographic
Standard deviation table
Box-and-whisker plot
Quartiles divide a dataset into:
Two equal parts
Three equal parts
Four equal parts
Ten equal parts
The first quartile (Q1) represents:
The highest 25% of data
The lowest 25% of data
The median
The difference between the mean and median
Quartiles are most useful for identifying:
Averages
Measures of central tendency
Spread and dispersion within a dataset
The most common value
A high standard deviation indicates that:
Data points are clustered closely around the mean
Data values are widely spread out from the mean
The mean and median are equal
The data has no variability
A low standard deviation suggests:
Greater variation from the mean
Data is highly inconsistent
Data values are close to the mean
There are many outliers
Which dataset likely has the highest standard deviation?
{5, 6, 7, 7, 8}
{50, 100, 150, 200, 250}
{10, 11, 12, 13, 14}
{20, 20, 20, 20, 20}
A limitation of standard deviation is that:
It cannot be used with continuous data
It is unaffected by outliers
It is complex for non-specialists to interpret
It is identical to the mean
One advantage of using the mean is that:
It ignores outliers
It uses all data values in calculation
It shows the middle value
It identifies the most frequent value
A limitation of the mode is that:
It cannot be used with qualitative data
There may be more than one mode or no mode at all
It is affected by extreme values
Which measure of central tendency is most affected by outliers?
Mean
Median
Mode
Quartiles
Why might a business manager prefer a bar chart over a pie chart?
Bar charts show proportions more clearly
Bar charts compare categories more effectively
Bar charts are always more accurate
Pie charts cannot display percentages
Which of the following is a general limitation of descriptive statistics?
They allow easy comparisons between datasets
They summarize large amounts of data
They cannot explain the causes behind the data
They make patterns and trends visible
