The inflation rate (IR) in Samar Province has been decreasing for the past four months. In September 2021, the inflation rate declined by 5.9 percent from 6.0 percent recorded in the previous month. However, this figure is 0.7 percentage points higher than the 5.2 percent inflation rate recorded in the same month last year. (See Figure 1)

     Among the six provinces, Samar posted the highest inflation rate in September 2021. Biliran and Eastern Samar followed with 5.3 and 5.2 percent, respectively. Meanwhile, Leyte posted the lowest IR at 2.4 percent. (See Figure 2)

BY COMMODITY GROUP

     From the eleven (11) commodity groups, six (6) exhibited decreases in September 2021 compared to the previous month, to wit: Education (1.9%); Restaurant & Miscellaneous Goods & Services (1.0%); Transport (0.9%); Alcoholic Beverages & Tobacco (0.7); Health (0.1%); and Food & Non- Alcoholic Beverages (0.4%).

     On the other hand, three yielded increases in inflation rate namely: Housing, Water, Electricity, Gas & Other Fuels (1.3%); Clothing & Footwear (0.5%); and Recreation & Culture commodity group (0.1%). (See Figure 3)

PURCHASING POWER OF PESO

     Purchasing Power of Peso (PPP) remained at 0.69 for September 2021, indicating that a peso in 2012 is only worth 0.69 centavos in September 2021. This implies that the prices of the same market basket of goods and services valued at Php 100.00 in 2012 are worth Php 69.00 in September 2021. (See Figure 4)

MONTHLY CONSUMER PRICE INDEX

     A Consumer Price Index (CPI) of 145.5 was recorded in September 2021, depicting an increase of 0.7 points from the CPI generated in August 2021. This is relatively higher by 8.1 points compared to the CPI generated from the same month in 2020. (See Figure 5)

SGD. RIZA N. MORALETA 
 Chief Statistical Specialist

TECHNICAL NOTES 

Consumer Price Index (CPI) - An indicator of the changes in the average retail prices of a fixed market basket of goods and services commonly purchased by households relative to a base year. 

Uses of CPI - The CPI is most widely used in the calculation of the inflation rate and purchasing power of the peso. It is a major statistical series used for economic analysis and as a monitoring indicator of government economic policy. 

Base Period/Year - The reference date or base period is the benchmark or reference date or period at which the index is taken as equal to 100. The current base period is 2012. 

Market Basket - A sample of goods and services purchased for consumption availed by the households in the country was selected to represent the composite price behavior of all goods and services purchased by consumers. 

Weight - A value attached to a commodity or group of commodities to indicate the relative importance of that commodity or group of commodities in the market basket. 

Formula - The formula used in computing the CPI is the weighted arithmetic mean of price relatives, the Laspeyre’s formula with a fixed base year period (2012) weights. 

Geographic Coverage - CPI values are computed at the national, regional, and provincial levels, and for selected cities. 

Inflation Rate - is the rate of change of the CPI expressed in percent. Inflation is interpreted in terms of the declining purchasing power of the peso. 

Purchasing Power of Peso - shows how much the peso in the base period is worth in the current period. It is computed as the reciprocal of the CPI for the period under review multiplied by 100.

SGD. RIZA N. MORALETA 
 Chief Statistical Specialist