6 Questions
Why is it necessary to understand the concept of varying widths in histograms when representing grouped data?
Understanding the concept of varying widths in histograms is necessary because it allows for accurate representation of the frequency distribution for grouped data. Varying widths account for intervals of different sizes, ensuring that the visual representation accurately reflects the distribution of the data.
What is the formula for calculating the mean of grouped data?
$\frac{\sum_{i=1}^{n}f_ix_i}{N}$
In a grouped frequency distribution, what does $x_i$ represent in the formula for mean?
The mid-point of the class interval
What is the purpose of drawing a cumulative frequency curve (ogive) in statistics?
To find the median of grouped data
Which measure of central tendency is most affected by extreme values or outliers in grouped data?
Mean
When representing grouped data using histograms, why is it important to consider varying widths of the bars?
To accurately depict the frequency distribution
Test your knowledge of statistics with this quiz covering topics such as ungrouped and grouped frequency distributions, bar graphs, histograms, and frequency polygons. This quiz is designed for students familiar with Class IX mathematics curriculum.
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