The data in Table 4 shows the list of month wise sales during 2018 for both the brands Suzuki and Yamaha. Table 4. Total monthly Sales of Suzuki and Yamaha motorcycles during the year of 2018 Month 1 2 3 4 5 6 7 8 9 10 11 12 Suzuki 1510 2055 1964 1840 1846 2067 1901 1837 1922 2305 1849 2050 Yamaha 1409 1503 1817 2314 2435 1978 2159 2123 2003 2121 2019 2522 The z-score value for the sales during 2018 are 1.97701 and 1.1992 for Suzuki and Yamaha respectively. Use z score technique to find the corresponding sales and month for the both the brands