How to Find the IQR. IQR stands for Interquartile Range, and it is used in statistical analysis to help draw conclusions about a data set. It is often preferred over the range in measuring the spread of a data set, because it excludes most outliers.You can learn how to find the IQR by reading the following:he IQR is defined as the difference between the upper quartile and the lower quartile of a data set, sometimes written as Q3 - Q1. Ad. 2. Organize your numerical data set in ascending order.
The Mesozoic era is centred between two mass extinctions, the Permian-Triassic event and the Cretaceous-Poleogene event. The Permian-Triassic event was the largest mass extinction in our world's history.
Transcript of Atmosphere of the Mesozoic Era. photo credit Nasa / Goddard Space Flight Center / Reto Stoeckli StÃ¶ckli atmosphere of The Mesozoic Era atmosphere of The Mesozoic Era Triassic Period Jurrassic Period Cretaceous Period Wrap Up This presentation is about The atmosphere of The mesozoic. era