Echocardiogram - Echo. 1  Problems with the outer lining of your heart (the pericardium). 2  Problems with the large blood vessels that enter and leave the heart. 3  Blood clots in the chambers of your heart. 4  Abnormal holes between the chambers of the heart.
(3) Select the smallest observed value as the lower limit of the first class (e.g. the left hand value for the first class), and add multiples of the class width from step (2) to obtain the lower limits for each class. So in the black bear case, the lower class limits would be. 16.0, 26.2, 36.4, 46.6, , 107.8. (4) Find the upper class limits (the right hand value for each class) by adding the class width to the lower class limits and subtracting from this the smallest significant digit in the observations.
Measure on the most critical surface. If not more than 16% of all value. based on sampling length are exceed the limit, surface is acceptable. - The first value does not exceed 70% of the limit. - The first three values do not exceed the limit. - Not more than one of the first six value exceed the limit.