39 2025-07-31       0.9      3.3
40 2025-08-31      -0.1      2.6
41 2025-09-30       0.3      2.7
42 2025-11-30       0.2      3.0
43 2025-12-31       0.5      3.0
> print(ortalama)
[1] 0.2767442
> summary(USINF)
      hist         
 Min.   :2022-05-31
 1st Qu.:2023-04-15
 Median :2024-02-29
 Mean   :2024-03-01
 3rd Qu.:2025-01-15
 Max.   :2025-12-30
  PPmonthly          PPannual     
Min.   :-0.5000   Min.   : 0.100  
1st Qu.:-0.0500   1st Qu.: 2.000  
Median : 0.2000   Median : 2.600  
Mean   : 0.1698   Mean   : 3.558  
3rd Qu.: 0.4000   3rd Qu.: 3.400  
Max.   : 1.1000   Max.   :11.300