Positional YoY Stats regression

This is the breakout of mean, standard deviation for some common roto categories. The sample is the last ten years (2009-2018).
Also included is a regression of a YoY r-squared for the category. The regression is run for only players that had 300+ ABs in a year and considering how well the next year’s category was explained by the current year (regardless of that year’s ABs).
The regression is trying to say “how well does a catchers last year HR’s explain next years?” for example.

CSSOF1B2BSS3B

Stat	Mean	StdDev	YoY_RSqr
AVG	257	29	0.15
OBP	323	34	0.21
SLG	415	51	0.08
HR	14.13	6.02	0.25
SB	3.13	3.11	0.24
RBI	56.67	16.07	0.19
R	47.68	12.33	0.2
wRC+	99.75	20.21	0.09

Stat	Mean	StdDev	YoY_RSqr
AVG	266	28	0.11
OBP	321	31	0.16
SLG	402	66	0.23
HR	12.3	7.53	0.24
SB	13.26	10.5	0.5
RBI	56.16	19.11	0.18
R	64.52	18.31	0.21
wRC+	94.79	23.34	0.17

Stat	Mean	StdDev	YoY_RSqr
AVG	269	27	0.11
OBP	336	31	0.18
SLG	434	63	0.22
HR	16.13	9.47	0.33
SB	14.63	12.41	0.46
RBI	60.16	23.35	0.28
R	69.13	19.93	0.23
wRC+	108.48	22.47	0.17

Stat	Mean	StdDev	YoY_RSqr
AVG	271	31	0.22
OBP	353	40	0.38
SLG	466	68	0.23
HR	23.19	10.07	0.35
SB	4.76	5.37	0.44
RBI	80.85	24.43	0.24
R	71.81	21.34	0.29
wRC+	120.6	24.77	0.25

Stat	Mean	StdDev	YoY_RSqr
AVG	271	30	0.16
OBP	331	31	0.1
SLG	415	57	0.22
HR	13.74	8.76	0.31
SB	11.98	10.89	0.53
RBI	58.2	22.15	0.23
R	67.89	22.54	0.24
wRC+	102.32	21.07	0.15

Stat	Mean	StdDev	YoY_RSqr
AVG	266	28	0.11
OBP	321	31	0.16
SLG	402	66	0.23
HR	12.3	7.53	0.24
SB	13.26	10.5	0.5
RBI	56.16	19.11	0.18
R	64.52	18.31	0.21
wRC+	94.79	23.34	0.17

Stat	Mean	StdDev	YoY_RSqr
AVG	270	25	0.12
OBP	334	29	0.18
SLG	446	57	0.24
HR	18.74	9.16	0.26
SB	4.97	5.31	0.31
RBI	70.68	21.6	0.15
R	65.04	20.53	0.23
wRC+	110.35	20.26	0.25

Next, I did the same run — but tried to define what a “good” player may be. The kind of player you want to auction at higher than minimum bid in the “lates”. So, I used 300 ABs and wRC+ above mean for the prior year.

CSSOF1B2BSS3B

Stat	Mean	StdDev	YoY_RSqr
AVG	263	28	0.24
OBP	332	30	0.22
SLG	426	48	0.08
HR	14.65	6.09	0.25
SB	3.28	3.11	0.23
RBI	58.83	15.92	0.17
R	50.05	11.88	0.17
wRC+	105.63	17.19	0.1

Stat	Mean	StdDev	YoY_RSqr
AVG	273	27	0.11
OBP	329	29	0.15
SLG	418	63	0.21
HR	13.44	7.67	0.23
SB	14.43	11.01	0.52
RBI	59.58	18.89	0.15
R	68.53	17.54	0.15
wRC+	101.52	21.45	0.13

Stat	Mean	StdDev	YoY_RSqr
AVG	274	25	0.1
OBP	344	29	0.18
SLG	447	61	0.24
HR	17.42	9.7	0.33
SB	15.94	12.77	0.46
RBI	63.55	23.31	0.28
R	73.76	19.11	0.19
wRC+	114.56	20.49	0.18

Stat	Mean	StdDev	YoY_RSqr
AVG	284	25	0.17
OBP	369	35	0.41
SLG	496	56	0.19
HR	26.01	9.74	0.34
SB	5.44	5.76	0.43
RBI	88.47	21.87	0.16
R	80.05	18.61	0.21
wRC+	132.12	19.52	0.22

Stat	Mean	StdDev	YoY_RSqr
AVG	280	26	0.17
OBP	341	25	0.09
SLG	432	50	0.24
HR	14.94	8.98	0.33
SB	12.71	11.34	0.54
RBI	63.02	21.73	0.22
R	73.75	21.27	0.19
wRC+	109.87	16.51	0.16

Stat	Mean	StdDev	YoY_RSqr
AVG	273	27	0.11
OBP	329	29	0.15
SLG	418	63	0.21
HR	13.44	7.67	0.23
SB	14.43	11.01	0.52
RBI	59.58	18.89	0.15
R	68.53	17.54	0.15
wRC+	101.52	21.45	0.13

Stat	Mean	StdDev	YoY_RSqr
AVG	275	24	0.16
OBP	343	26	0.15
SLG	460	55	0.23
HR	20.25	9.27	0.2
SB	5.48	5.7	0.29
RBI	75.42	21.19	0.1
R	70.45	19.65	0.15
wRC+	116.91	17.64	0.21