suggest 6 important external variable which can be considered as additional variable in order to make a better prediction of the prices/returns of maruti.ns adjusted

head (Prices) ## DRREDDY.NS. Adjusted ITC.NS. Adjusted ULTRACEMCO.NS. Adjusted ## 2017-01-02 2936.205 201.9184 3318.781 ## 2017-01-03 2925.731 203.9296 3274.827 ## 2017-01-04 2943.728 205.6894 3249.921 ## 2017-01-05 2986.533 206.7788 3330.102 ## 2017-01-06 3008.339 203.3849 3270.939 ## 2017-01-09 2914.113 206.0246 3240.521 ## MARUTI.NS. Adjusted JSWSTEEL.NS. Adjusted TITAN.NS. Adjusted ## 2017-01-02 5164.377 147.3485 324.6324 ## 2017-01-03 5204.437 148.2726 338.4363 ## 2017-01-04 5198.532 147.0059 349.6154 ## 2017-01-05 5324.004 158.3660 348.0600 ## 2017-01-06 5305.674 157.9603 345.2896 ## 2017-01-09 5346.254 158.7267 344.7063 ## NSEI. Adjusted ## 2017-01-02 8179.50 ## 2017-01-03 8192.25 ## 2017-01-04 8190.50 ## 2017-01-05 8273.80 ## 2017-01-06 8243.80 ## 2017-01-09 8236.05 head (returns) ## DRREDDY.NS. Adjusted ITC.NS. Adjusted ULTRACEMCO.NS. Adjusted ## 2017-01-03 -0.003573609 0.009911409 -0.013332534 ## 2017-01-04 0.006132631 0.008592481 -0.007634281 ## 2017-01-05 0.014436190 0.005282441 0.024372069 ## 2017-01-06 0.007275130 -0.016549634 -0.017925787 ## 2017-01-09 -0.031822803 0.012895610 -0.009343046 ## 2017-01-10 -0.006014260 0.012530382 -0.003774034 ## MARUTI.NS. Adjusted JSWSTEEL.NS. Adjusted TITAN.NS. Adjusted 3 0.006252274 -0.008580014 0.074436239 -0.002565074 0.004839943 0.013540175 0.041642222 0.032497912 -0.004458958 -0.007991441 -0.001690686 0.019133404 ## 2017-01-03 0.007726972 ## 2017-01-04 -0.001135306 ## 2017-01-05 0.023849498 ## 2017-01-06 -0.003448853 ## 2017-01-09 0.007619329 ## 2017-01-10 0.002885469 ## NSEI. Adjusted ## 2017-01-03 0.0015575614 ## 2017-01-04 -0.0002136393 ## 2017-01-05 0.0101189260 ## 2017-01-06 -0.0036324931 ## 2017-01-09 -0.0009405426 ## 2017-01-10 0.0063601932 head (Prices) ## DRREDDY.NS. Adjusted ITC.NS. Adjusted ULTRACEMCO.NS. Adjusted ## 2017-01-02 2936.205 201.9184 3318.781 ## 2017-01-03 2925.731 203.9296 3274.827 ## 2017-01-04 2943.728 205.6894 3249.921 ## 2017-01-05 2986.533 206.7788 3330.102 ## 2017-01-06 3008.339 203.3849 3270.939 ## 2017-01-09 2914.113 206.0246 3240.521 ## MARUTI.NS. Adjusted JSWSTEEL.NS. Adjusted TITAN.NS. Adjusted ## 2017-01-02 5164.377 147.3485 324.6324 ## 2017-01-03 5204.437 148.2726 338.4363 ## 2017-01-04 5198.532 147.0059 349.6154 ## 2017-01-05 5324.004 158.3660 348.0600 ## 2017-01-06 5305.674 157.9603 345.2896 ## 2017-01-09 5346.254 158.7267 344.7063 ## NSEI. Adjusted ## 2017-01-02 8179.50 ## 2017-01-03 8192.25 ## 2017-01-04 8190.50 ## 2017-01-05 8273.80 ## 2017-01-06 8243.80 ## 2017-01-09 8236.05 head (returns) ## DRREDDY.NS. Adjusted ITC.NS. Adjusted ULTRACEMCO.NS. Adjusted ## 2017-01-03 -0.003573609 0.009911409 -0.013332534 ## 2017-01-04 0.006132631 0.008592481 -0.007634281 ## 2017-01-05 0.014436190 0.005282441 0.024372069 ## 2017-01-06 0.007275130 -0.016549634 -0.017925787 ## 2017-01-09 -0.031822803 0.012895610 -0.009343046 ## 2017-01-10 -0.006014260 0.012530382 -0.003774034 ## MARUTI.NS. Adjusted JSWSTEEL.NS. Adjusted TITAN.NS. Adjusted 3 0.006252274 -0.008580014 0.074436239 -0.002565074 0.004839943 0.013540175 0.041642222 0.032497912 -0.004458958 -0.007991441 -0.001690686 0.019133404 ## 2017-01-03 0.007726972 ## 2017-01-04 -0.001135306 ## 2017-01-05 0.023849498 ## 2017-01-06 -0.003448853 ## 2017-01-09 0.007619329 ## 2017-01-10 0.002885469 ## NSEI. Adjusted ## 2017-01-03 0.0015575614 ## 2017-01-04 -0.0002136393 ## 2017-01-05 0.0101189260 ## 2017-01-06 -0.0036324931 ## 2017-01-09 -0.0009405426 ## 2017-01-10 0.0063601932