Disease Categories. Electrical: Abnormal heart rhythms (arrhythmias) are caused by problems with the electrical system that regulates the steady heartbeat. The heart rate may be too slow or too fast; it may stay steady or become chaotic (irregular and disorganized).lectrical: Abnormal heart rhythms (arrhythmias) are caused by problems with the electrical system that regulates the steady heartbeat. The heart rate may be too slow or too fast; it may stay steady or become chaotic (irregular and disorganized).
Typing on a Computer Keyboard. For some students, learning to type on a computer can be as difficult a task as learning to write with a pencil. Students with good fine motor skills are often better at mastering this particular skill. Typing requires coordinating finger movements and memory skills. A student must first remember where the letters, numbers, and symbols are located on the keyboard.
The median typist speed is 38 WPM and the mean typing speed is 40 WPM. RankMyTyping.com, a typing test website that aggregates typing speed scores based on online tests, ranks the average typing speed at 43 WPM. According to RankMyTyping.com, secretaries that have taken the test rank around 74 WPM and the average 13-year-old performs around 23 WPM.