Data literacy assessment instrument for preparing 21 Cs literacy: preliminary study

This study aims to develop an instrument to measure data literacy. Data literacy is one of the 21st century literacy (21Cs) that needed face the Industrial Revolution 4.0 (4IR). The interpretations about the ability of students' data literacy are used as additional data. This study uses a modified instrument development stage, which consists of 6 stages. Sampling technique using purposive random sampling with a total sample 94 junior high school students. The results of the content validity test show that all questions are valid in content with a minimum Aiken's V value of 0.76. The validity and reliability test empirically using Parscale shows that the questions are valid and reliable to measure students with abilities of -2.8 to 2.1 logit scale. Based on the research it is concluded that the data literacy instrument can be used to test the initial ability of data literacy.