Te. Find the spread by finding the range, IQR, and sample standard deviation. Round to one decimal place.Range =IQR=S=In an approximately normal distribution, 95% of the data lie between the mean plus and minus twostandard deviations,Therefore, if you don't have the standard deviation, a good "range rule of thumb" is that the standarddeviation will be approximately the range divided by 4.Using the Range Rule fo Thumb, what is the estimated standard deviation for this data set?Range Rule of Thumb =