diff --git a/data_analysis/tests/data/sample_raw.json b/data_analysis/tests/data/sample_raw.json
new file mode 100644
index 0000000..feedb06
--- /dev/null
+++ b/data_analysis/tests/data/sample_raw.json
@@ -0,0 +1,12 @@
+[
+  {"intensity": 120.5, "background_noise": 4.2},
+  {"intensity": 123.1, "background_noise": 4.0},
+  {"intensity": 124.7, "background_noise": 4.3},
+  {"intensity": 119.8, "background_noise": 4.5},
+  {"intensity": 122.6, "background_noise": 4.1},
+  {"intensity": 121.3, "background_noise": 4.4},
+  {"intensity": 125.4, "background_noise": 4.2},
+  {"intensity": 126.0, "background_noise": 4.3},
+  {"intensity": 120.2, "background_noise": 4.1},
+  {"intensity": 123.8, "background_noise": 4.4}
+]
\ No newline at end of file