National Consumer Price Index (CPI) is the key gauge for inflation in Japan. Simply put, inflation reflects a decline in the purchasing power of the Yen, where each Yen buys fewer goods and services. In terms of measuring inflation, CPI is the most obvious way to quantify changes in purchasing power. The report tracks changes in the price of a basket of goods and services that a typical Japanese household might purchase. An increase in the index indicates that it takes more Yen to purchase this same set of basic consumer items.

Markets will typically pay more attention to "CPI excluding Fresh Food," because it excludes volatile food prices that can distort overall CPI. The headline figure for CPI is the percentage change in the index on a month to month or year to year basis.

As the most important indicator of inflation, CPI figures are closely followed by the Bank of Japan. Rising Consumer Prices may prompt the BoJ to raise interest rates in order to manage inflation and slow economic growth. Higher interest rates make holding the Yen more attractive to foreign investors, and this higher level of demand will place upward pressure on the value of the Yen.

A monthly gauge of manufacturing activity and future outlook. The CIPS PMI is comparable to the US ISM survey, similarly based on the opinions of executives in manufacturing companies. Purchasing managers are tasked with gauging future demand, and adjusting orders for materials accordingly. The PMI summarizes the opinions of these executives to give a picture of the future of the manufacturing sector. A higher PMI indicates that materials purchases are increasing and that the economic outlook is positive. Alternately, a lower PMI means orders for materials are down and the future outlook is less favorable. By nature, the figure is very sensitive to the business cycle and tends to match growth or decline in the economy as a whole.

The PMI is presented as an index with a value between 1-100.

Evaluates the monthly change in output produced by Japan's service sector. Because this report excludes manufacturing and only measures service industries catering mainly to domestic needs, the Tertiary Industry Index is a key indicator of domestic activity. The index incorporates data from firms involved in wholesale and retail trade, financial services, health care, real estate, leisure and utilities. The report excludes industrial manufacturing sectors that tend to be influenced by foreign demand. The tertiary industry index is posted monthly as a percentage change from the previous month's figure.

An index level of 50 denotes no change since the previous month, while a level above 50 signals an increase or improvement, and below 50 indicates a decrease or deterioration.

Change in the total value of inflation-adjusted sales at the retail level with auto fuel. It's the primary gauge of consumer spending, which accounts for the majority of overall economic activity.