The scientist grouped the participants for his study on intelligence and verbal aptitude. He grouped them based on the interpretation of their IQ scores (Very gifted, Gifted, Above Average, Average, Below Average). a ________. S1, S5 D: S4, S7 B: S2, S8 E: S9, S10 C: S3, S6 Subject No. IQ Subject No. IQ S1 134 S6 98 S2 111 S7 130 S3 100 S8 119 S4 122 S9 80 S5 150 S10 89 Which of the following techniques did the scientist use ________.
1) Range matching
2) Random sampling
3) Stratified sampling
4) Cluster sampling
5) Convenience sampling