The range refers to the area where the data points fall from the lowest to highest. Here, the lowest point is 437 and the highest is 1465. So the range is from 437 to 1465
Since you said the height of your chair and you desk, chair would go first when subtracting. C= chair c - 29.75 = -10.25 + 29.75 = + 29.75 c= 19.5 So, you chair is 19.5 (19 1/2) inches tall.
