There are some errors when run to print when I use that methods

saeple_data = Custoesinple(DNIA) In [13]: culcunte the man of sixpte dute objest pcan_tiaghle = Mimple data.calculate-mas() point (f wesh of condie data: (ncan catele)") Nametrror Tracreack (most recent call 1 - Calcuate the aean of matple_dats object +2 mcan sanple o sample deta,caiculateinemi). 1 print (4"Mean of sample dotaif(ean_sample) ) Naettrert nase "sample data' is not defined in [34]t a colcuate the sumple standind orviut ian of sanple datio objent. sd sample = sanple data.calculate sd() print(f"siaple st indard 0eviation of cunple data: (44sample)} saeple_data = Custoesinple(DNIA) In [13]: culcunte the man of sixpte dute objest pcan_tiaghle = Mimple data.calculate-mas() point (f wesh of condie data: (ncan catele)") Nametrror Tracreack (most recent call 1 - Calcuate the aean of matple_dats object +2 mcan sanple o sample deta,caiculateinemi). 1 print (4"Mean of sample dotaif(ean_sample) ) Naettrert nase "sample data' is not defined in [34]t a colcuate the sumple standind orviut ian of sanple datio objent. sd sample = sanple data.calculate sd() print(f"siaple st indard 0eviation of cunple data: (44sample)}