diff --git a/SCsub b/SCsub
index 87e3ac1..597ee6f 100644
--- a/SCsub
+++ b/SCsub
@@ -82,6 +82,7 @@ sources = [
     "mlpp/transforms/transforms_old.cpp",
     "mlpp/stat/stat_old.cpp",
     "mlpp/lin_alg/lin_alg_old.cpp",
+    "mlpp/hypothesis_testing/hypothesis_testing_old.cpp",
 
     "test/mlpp_tests.cpp",
 ]
diff --git a/mlpp/hypothesis_testing/hypothesis_testing_old.cpp b/mlpp/hypothesis_testing/hypothesis_testing_old.cpp
new file mode 100644
index 0000000..cf32344
--- /dev/null
+++ b/mlpp/hypothesis_testing/hypothesis_testing_old.cpp
@@ -0,0 +1,20 @@
+//
+//  HypothesisTesting.cpp
+//
+//  Created by Marc Melikyan on 3/10/21.
+//
+
+#include "hypothesis_testing_old.h"
+
+std::tuple<bool, real_t> MLPPHypothesisTestingOld::chiSquareTest(std::vector<real_t> observed, std::vector<real_t> expected) {
+	//real_t df = observed.size() - 1; // These are our degrees of freedom
+	real_t sum = 0;
+	for (uint32_t i = 0; i < observed.size(); i++) {
+		sum += (observed[i] - expected[i]) * (observed[i] - expected[i]) / expected[i];
+	}
+
+	return std::tuple<bool, real_t>();
+}
+
+void MLPPHypothesisTestingOld::_bind_methods() {
+}
diff --git a/mlpp/hypothesis_testing/hypothesis_testing_old.h b/mlpp/hypothesis_testing/hypothesis_testing_old.h
new file mode 100644
index 0000000..bfb730c
--- /dev/null
+++ b/mlpp/hypothesis_testing/hypothesis_testing_old.h
@@ -0,0 +1,28 @@
+
+#ifndef MLPP_HYPOTHESIS_TESTING_OLD_H
+#define MLPP_HYPOTHESIS_TESTING_OLD_H
+
+//
+//  HypothesisTesting.hpp
+//
+//  Created by Marc Melikyan on 3/10/21.
+//
+
+#include "core/math/math_defs.h"
+
+#include "core/object/reference.h"
+
+#include <tuple>
+#include <vector>
+
+class MLPPHypothesisTestingOld : public Reference {
+	GDCLASS(MLPPHypothesisTestingOld, Reference);
+
+public:
+	std::tuple<bool, real_t> chiSquareTest(std::vector<real_t> observed, std::vector<real_t> expected);
+
+protected:
+	static void _bind_methods();
+};
+
+#endif /* HypothesisTesting_hpp */