What statistics are needed to draw a box plot?. a) The minimum, maximum, median, first and third quartiles.. b) The median, mean, and standard deviation.. c) The median and interquartile range.. d) The mean and standard deviation.
The correct answer is: a) The minimum, maximum, median, first and third quartiles
The correct answer is: a) The minimum, maximum, median, first and third quartiles.
To draw a box plot, also known as a box-and-whisker plot, you need several key statistics. These statistics help visualize the distribution of a dataset and provide important insights into the spread and central tendencies of the data.
Here are the specific statistics needed:
1. Minimum: The smallest value in the dataset, which represents the lowest point of the plot.
2. Maximum: The largest value in the dataset, which represents the highest point of the plot.
3. Median: The middle value of the dataset, when arranged in ascending or descending order. It divides the data into two halves and is often represented by a line inside the box of the box plot.
4. First Quartile (Q1): The median of the lower half of the dataset. It represents the value below which 25% of the data falls.
5. Third Quartile (Q3): The median of the upper half of the dataset. It represents the value below which 75% of the data falls.
These five key statistics are used to construct the box plot. The plot consists of a rectangular box with a line inside it representing the median. Two lines, called “whiskers,” extend from the box to the minimum and maximum values. The whiskers may optionally include additional lines or points, called “outliers,” to represent data points that are exceptionally small or large.
By examining a box plot, you can quickly understand the range of values, the overall spread or dispersion, and the skewness or symmetry of your dataset. It is a simple yet effective visual tool for summarizing and analyzing statistical data.
More Answers:
Understanding and Visualizing the Distribution of a Quantitative VariableDetermining the Location of the Test Score Associated with the Third Quartile: A Step-by-Step Guide for Math Enthusiasts
Understanding the Relationship: The Second Quartile and the Median