After hours researching and comparing all models on the market, we find out the Best refurbished calculators of 2025. Check our ranking below.<\/em><\/p>\n2,379 Reviews Scanned<\/span><\/strong><\/p>\n\n
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Sale<\/span>Rank No. #1<\/span>\n \n
\n ![\"Texas](\"https:\/\/m.media-amazon.com\/images\/I\/41RyeQNCxEL._SL160_.jpg\")
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\n Texas Instruments TI-84 Plus Graphics Calculator, Black (Renewed) <\/a>\n \n
- Real and complex numbers calculated to 14-digit accuracy and displayed with 10 digits plus a 2-digit exponent. Graphs 10 rectangular functions, 6 parametric expressions, 6 polar expressions, and 3 recursively-defined sequences. Up to 10 graphing functions defined, saved, graphed, and analyzed at one time.<\/li>
- Sequence graphing mode shows time series plot, cobweb\/stair-step plot, and phase plots. User-defined list names. Lists store up to 999 elements. 14 interactive zoom features. Numeric evaluations given in table format for all graphing modes.<\/li>
- Interactive analysis of function values, roots, maximums, minimums, integrals, and derivatives. 7 different graph styles for differentiating the look of each graph drawn. Horizontal and vertical split- screen options. Stores up to 10 - 50x50 matrices.<\/li>
- Matrix operations including inverse, determinant, transpose, augment, reduced row echelon form, and elementary row operations. Convert matrices to lists and vice-versa. List-based one- and two-variable statistical analysis, including logistic, sinusoidal, median-median, linear, logarithmic, exponential, power, quadratic polynomial, cubic polynomial, and quartic polynomial regression models.<\/li>
- 3 statistical plot definitions for scatter plots, xy-line plots, histograms, regular and modified box-and-whisker plots, and normal probability plots. Advanced statistics features including 9 hypothesis testing functions, 6 confidence interval functions, and one-way analysis of variance..Features: 200+ functions, multi-line display.<\/li><\/ul> <\/div>\n <\/div>\n\n
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\n <\/a>\n\n ![\"Amazon](\"https:\/\/m.media-amazon.com\/images\/I\/41+5PF4DVTL._SL160_.jpg\")
\n <\/a>\n\n <\/div>\n\n ![\"Texas](\"https:\/\/m.media-amazon.com\/images\/I\/41YMmcb5pzL._SL160_.jpg\")
\n <\/a>\n\n ![\"Calculator,](\"https:\/\/m.media-amazon.com\/images\/I\/51u0FZJtE6L._SL160_.jpg\")
\n <\/a>\n\n ![\"Texas](\"https:\/\/m.media-amazon.com\/images\/I\/41vPNjFu6OL._SL160_.jpg\")
\n <\/a>\n\n <\/div>\n\n ![\"CALCUFUSION](\"https:\/\/m.media-amazon.com\/images\/I\/51HQ+Gkl60L._SL160_.jpg\")
\n <\/a>\n\n ![\"CATIGA](\"https:\/\/m.media-amazon.com\/images\/I\/41ckRtqnSgL._SL160_.jpg\")
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