Open AccessIndonesia’s Badminton National Referees: What is The Level of Self-Confidence and Concentration?
Author(s) -
ERA PRATIWI,
SUHARJANA,
I PUTU AGUS DHARMA HITA,
HELEN PURNAMA SARI,
ELSA ARIESTIKA
Publication year - 2022
Publication title -
innovare journal of education
Language(s) - English
Resource type - Journals
ISSN - 2347-5528
DOI - 10.22159/ijoe.2022v10i1.43398
Subject(s) - cronbach's alpha , confidence interval , test (biology) , psychology , reliability (semiconductor) , nonprobability sampling , statistics , descriptive statistics , sample (material) , population , validity , social psychology , clinical psychology , mathematics , medicine , psychometrics , environmental health , paleontology , power (physics) , physics , chemistry , chromatography , quantum mechanics , biology