What type of data is recorded by the electrocardiogram

Electrocardiography is the process of producing an electrocardiogram a graph of voltage versus time - of the electrical activity of the heart using electrodes placed on the skin.

The electrocardiogram records the electrical signals of heart.

Explanation:

It is a type graph that records the electrical signals or rate of the heart. It is also called ECGs.

It is a common test that is used to detect the problems in heart and also monitor the status of the heart in many conditions.

During the ECG, sensors (electrodes) that can detect the electrical activity of the heart are attached to the chest.

Hence, the type of data recorded by the electrocardiogram is the electrical signals of heart.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.