## How do you find the range of a whisker plot?

To find the range of all plots, subtract the smallest value from the largest value.

## Does box and whisker plot show range?

If you are interested in the spread of all the data, it is represented on a boxplot by the horizontal distance between the smallest value and the largest value, including any outliers. In the boxplot above, data values range from about 0 (the smallest non-outlier) to about 16 (the largest outlier), so the range is 16.

**How do you read a box plot range?**

The middle “box” represents the middle 50% of scores for the group. The range of scores from lower to upper quartile is referred to as the inter-quartile range. The middle 50% of scores fall within the inter-quartile range. Seventy-five percent of the scores fall below the upper quartile.

**What does a whisker plot tell you?**

The box and whisker plot, sometimes simply called the box plot, is a type of graph that help visualize the five-number summary.

### What is the 1.5 IQR rule?

Add 1.5 x (IQR) to the third quartile. Any number greater than this is a suspected outlier. Subtract 1.5 x (IQR) from the first quartile. Any number less than this is a suspected outlier.

### How do I calculate 1qr?

We can find the interquartile range or IQR in four simple steps:

- Order the data from least to greatest.
- Find the median.
- Calculate the median of both the lower and upper half of the data.
- The IQR is the difference between the upper and lower medians.

**Can Excel make box and whisker plots?**

Excel doesn’t offer a box-and-whisker chart. Instead, you can cajole a type of Excel chart into boxes and whiskers. Instead of showing the mean and the standard error, the box-and-whisker plot shows the minimum, first quartile, median, third quartile, and maximum of a set of data. The median divides the box.

**How do you find Q1?**

Q1 is the median (the middle) of the lower half of the data, and Q3 is the median (the middle) of the upper half of the data. (3, 5, 7, 8, 9), | (11, 15, 16, 20, 21). Q1 = 7 and Q3 = 16. Step 5: Subtract Q1 from Q3.

#### What percent of the sophomores spend more than 60 minutes on homework per night?

25%

25% of the sophomores spend between 48 & 60 minutes per night on homework.

#### Can a Boxplot be bimodal?

A: Box plot for a sample from a random variable that follows a mixture of two normal distributions. The bimodality is not visible in this graph.

**What does it mean if a Boxplot is positively skewed?**

Positively Skewed : For a distribution that is positively skewed, the box plot will show the median closer to the lower or bottom quartile. A distribution is considered “Positively Skewed” when mean > median. It means the data constitute higher frequency of high valued scores.