Study and teaching 21 Economics 16 Mathematics 14 Examinations 10 Statistics 10 Engineering & Applied Sciences 9 Computer programming 8 Training of 8 Computer networks 7 Grammar 7 Algebra 6 Electrical & Computer Engineering 6 Interpersonal communication 6 Management 6 Data processing 5 Group games 5 Group relations training 5 Java (Computer program language) 5 Problem solving 5 Teams in the workplace 5 Telecommunications 5 Telecommunications engineers 5 Arithmetic 4 Business communication 4 Certification 4 Communication in organizations 4 Engineering 4 English language 4 Executive ability 4 Internetworking (Telecommunication) 4