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.
Step 3. Enter the first tiered value in the first cell and press Tab to move to the next row. Click Next when you've finished entering values. Step 4. Enter a name for the drop-down list field and check the Limit to List box to restrict data selections to the values you entered.Leave the Allow Multiple Values box unchecked to prevent selecting more than one value. Step 5. Click Finish to create the drop-down list field.tep 4. Enter a name for the drop-down list field and check the Limit to List box to restrict data selections to the values you entered. Leave the Allow Multiple Values box unchecked to prevent selecting more than one value. Step 5. Click Finish to create the drop-down list field.