For questions 1-3, use the triangle below. 1. Find the length of side b to two decimal places.
2. Find the length of side a to two decimal places.
3. Find sin55° using ratios of sides of this triangle; check using your calculator.

The interquartile range (IQR) is a measure of inconstancy, in light of partitioning an informational collection into quartiles. Quartiles isolate a rank-requested informational collection into four a balance of. The qualities that gap each part are known as the primary, second, and third quartiles; and they are signified by Q1, Q2, and Q3, individually. 

Where as, measures of spread portray how comparable or changed the arrangement of watched esteems are for a specific variable (information thing). Measures of spread incorporate the range, quartiles and the interquartile range, difference and standard deviation.