Of the two, the CPI report is of more import and economists are forecasting that gauge to have risen 0.4% in April, in line with the March advance. The annual pace of headline CPI is seen slowing to 3.4% from 3.5% in March. The so-called core CPI β which strips out food and energy costs β is expected to rise 0.3% in April versus 0.4% in March, with the annual pace falling to 3.6% from 3.8%.