<Tr> <Td> C:D </Td> <Td> − 0.563 </Td> </Tr> <Tr> <Td> A: B: C </Td> <Td> 0.938 </Td> </Tr> <Tr> <Td> A: B:D </Td> <Td> 2.063 </Td> </Tr> <Tr> <Td> A: C:D </Td> <Td> − 0.813 </Td> </Tr>

How many variables are there in the factorial research design of 2×3×2