Practise MYP Standard Mathematics questions on 8 Statistical Measures and Data Representation and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
In a relative frequency histogram, what does the area of each bar specifically represent?
Which of the following best explains why frequency density is necessary when class widths are unequal?
True or False: To draw a cumulative frequency curve (ogive), the cumulative frequencies must be plotted against the class midpoints on the horizontal axis.
A researcher is studying the eye colors of a population. Which of the following statements best describes why the mean cannot be used to summarize this data?
A company presents a bar chart of its annual growth but omits the data for a year when the company faced a major loss. This is an example of which statistical pitfall?
The proportion or percentage of the total data set in that interval
The absolute count of observations in that interval
The class width multiplied by the mean
The total sum of all numerical values in that interval
To ensure the area of each bar represents the frequency
To prevent the horizontal axis from needing an axis break
To make the bars touch each other correctly
To allow the graph to use categorical data
True
False
Eye color is categorical data, so arithmetic operations are not meaningful.
The sample size is likely too small to calculate a mean.
The distribution of eye colors is always perfectly symmetrical.
The data is numerical but discrete, and the mean requires continuous data.
Rounding error
Inappropriate grouping
Cherry-picking measures or data
Sampling bias
