Calculation Help

You can create measures like

Least Cost Shipment Count = 
VAR BaseTable = ADDCOLUMNS(
	VALUES( 'Ship History+Rates'[ShipmentID] ),
	"@least revenue carrier",
	CALCULATE(
		[Least Revenue Carrier],
		REMOVEFILTERS( 'Ship History+Rates'[SCAC/Rated] )
	)
)
VAR Result = SELECTCOLUMNS(
	FILTER(
		GROUPBY(
			BaseTable,
			[@least revenue carrier],
			"@num", SUMX( CURRENTGROUP(), 1 )
		),
		[@least revenue carrier] = SELECTEDVALUE( 'Ship History+Rates'[SCAC/Rated] )
	),
	[@num]
)
RETURN Result

and

Least Revenue Total = 
VAR BaseTable = ADDCOLUMNS(
	VALUES( 'Ship History+Rates'[ShipmentID] ),
	"@least revenue carrier",
	CALCULATE(
		[Least Revenue Carrier],
		REMOVEFILTERS( 'Ship History+Rates'[SCAC/Rated] )
	),
	"@least revenue value",
	CALCULATE(
		[Least Revenue$/Shipment],
		REMOVEFILTERS( 'Ship History+Rates'[SCAC/Rated] )
	)
)
VAR Result = SELECTCOLUMNS(
	FILTER(
		GROUPBY(
			BaseTable,
			[@least revenue carrier],
			"@val", SUMX( CURRENTGROUP(), [@least revenue value] )
		),
		[@least revenue carrier] = SELECTEDVALUE( 'Ship History+Rates'[SCAC/Rated] )
	),
	[@val]
)
RETURN Result

Put those into a table with 'Ship History+Rates'[SCAC/Rated] and it should work