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Dilakukan penelitian untuk mengetahui ada tidaknya peningkatan penjualan suatu barang, sebelum dan sesudah adanya pemasangan iklan. Data penjualan sebelum pemasangan iklan (X1) dan sesudah pemasangan

Dilakukan penelitian untuk mengetahui ada tidaknya

peningkatan penjualan suatu barang, sebelum dan sesudah

adanya pemasangan iklan. Data penjualan sebelum

pemasangan iklan (X1) dan sesudah pemasangan iklan

(X2) adalah sbb:

X1 : 129

130

140

110

112

150

110

114

150

140

110

X2 : 200

140

300

500

170

600

700

500

400

420

230

460

400

300

600

buktikan hipotesis bahwa: terdapat peningkatan penjualan

setelah ada pemasangan iklan!

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