The objective of this research was to ascertain the impact of self efficacy on problem solving ability in solving scale problems in class VIIB students of SMP Negeri 5 Cimahi. The subject of this study is 40 students in grade VIIB with 36 random samples. The type of research used is correlation analysis. The research instrument used is by distributing a self-efficacy questionnaire and a test of mathematical problem-solving ability. The data that has been obtained are then analyzed through classical assumption tests, Pearson correlation tests, and significance tests (t-test). Based on the analysis of questionnaire data and the mathematical problem-solving ability test, a correlation test score was obtained which has a sig value of 0.000 and a correlation amount of 0.775 which means that there is a correlation between Self Efficacy and Problem-Solving Ability, this shows that there is a direct correlation between the two variables. In addition, the Sig value was obtained from the t-test with a magnitude of 0.000 which means that the value does not exceed the significance level of 0.05, this shows that there is a unidirectional relationship and has a considerable influence. So it can be concluded that Problem-Solving Ability in solving scale problems is influenced by Self Efficacy
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