Accurate-Bugle-Strike skill

kanue
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Posts: 1,796

Accurate-Bugle-Strike skill Oct 11, 2015 17:23:49 GMT saltin, Napoleon Bonaparte, and 1 more like this

Quote

Post by kanue on Oct 11, 2015 17:23:49 GMT

Here is the detail of my little test.
- Kate and Sakurako are on heavy artillery.
- Sakurako has Accurate skill while Kate does not.
- Both have 2 stars in artillery.
- Both of them have are at full health.
- Both artillery units are at max rank.
- Both of them are at normal morale.
- Both of them shoot at the same target which is either in max level city (-18% dmg from artillery) or bunker (-30% dmg from artillery)
- The total number observations is 60.

I assume that "deprive enemy's evasion to artillery" mean bypassing the damage reduction from terrain so I would expect Sakurako to deal greater damage than Kate on target in city or bunker.

This is the result, using a statistical software called Gretl,

Null hypothesis: Difference of means = 0

Sample 1: (Kate)
n = 60, mean = 31.5, s.d. = 8.68371
standard error of mean = 1.12106
95% confidence interval for mean: 29.2568 to 33.7432

Sample 2: (Sakurako)
n = 60, mean = 43.4167, s.d. = 9.26684
standard error of mean = 1.19634
95% confidence interval for mean: 41.0228 to 45.8105

Test statistic: t(117) = (31.5 - 43.4167)/1.63952 = -7.2684
Two-tailed p-value = 4.424e-011
(one-tailed = 2.212e-011)

If you are not familiar with statistic or don't care to interpret, the result says that Sakurako does 43.4 damage on average while Kate does 31.5. The difference does not occur by chance due to the random number as indicated by the Two-tailed p-value. So a general with Accurate skill does greater damage, than whose without, to enemies that have damage reduction from terrain. I believe Bugle and Strike also work the same way as Accurate.

Here's data in case anyone wants to do something with it.

Kate/Sakurako/%reduction
38/60/18
38/52/18
38/42/18
41/47/18
49/61/18
42/44/18
38/42/18
43/49/18
38/61/18
35/54/18
35/45/18
46/57/18
36/42/18
29/33/18
22/51/18
37/38/18
37/46/18
32/41/18
38/53/18
35/42/18
32/60/18
35/37/18
30/52/18
43/38/18
28/51/18
29/47/18
27/40/18
26/52/18
27/44/18
46/29/18
35/41/18
38/32/18
41/51/18
36/47/18
32/46/18
35/31/18
37/53/18
29/39/18
39/47/18
30/55/18
22/29/30
19/41/30
19/27/30
30/25/30
26/45/30
24/44/30
24/34/30
22/46/30
17/31/30
17/42/30
19/35/30
24/29/30
14/32/30
26/36/30
21/45/30
43/57/30
42/51/30
16/35/30
24/38/30
19/31/30

Last Edit: Oct 13, 2015 5:15:21 GMT by kanue

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Suvorov
Darth Vader

The Beast from the East

Posts: 822

Accurate-Bugle-Strike skill Oct 11, 2015 17:26:13 GMT

Quote

Post by Suvorov on Oct 11, 2015 17:26:13 GMT

Oct 11, 2015 17:23:49 GMT kanue said:

Here is the detail of my little test.
- Kate and Sakurako are on heavy artillery.
- Sakurako has Accurate skill while Kate does not.
- Both of them have are at full health.
- Both artillery units are at max rank.
- Both of them are at normal morale.
- Both of them shoot at the same target which is either in max level city (-18% dmg from artillery) or bunker (-30% dmg from artillery)

I assume that "deprive enemy's evasion to artillery" mean bypassing the damage reduction from terrain so I would expect Sakurako to deal greater damage than Kate on target in city or bunker.

This is the result, using a statistical software called Gretl,

Null hypothesis: Difference of means = 0

Sample 1:
(Kate)
n = 60, mean = 31.5, s.d. = 8.68371

standard error of mean = 1.12106

95% confidence interval for mean: 29.2568 to 33.7432

Sample 2:
(Sakurako)
n = 60, mean = 43.4167, s.d. = 9.26684

standard error of mean = 1.19634

95% confidence interval for mean: 41.0228 to 45.8105

Test statistic: t(117) = (31.5 - 43.4167)/1.63952 = -7.2684

Two-tailed p-value = 4.424e-011

(one-tailed = 2.212e-011)

If you are not familiar with statistic or don't care to interpret, the result says that Sakurako does 43.4 damage on average while Kate does 31.5. The difference does not occur by chance due to the random number as indicated by the Two-tailed p-value. So a general with Accurate skill does greater damage, than whose without, to enemies that have damage reduction from terrain.

You did your math homework! Excellent, now I appreciate Suvorov in EW4 even more!

Mountbatten Global Moderator Dieppe was staged Posts: 7,562	Accurate-Bugle-Strike skill Oct 11, 2015 17:29:22 GMT via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Mountbatten on Oct 11, 2015 17:29:22 GMT Man you guys are way smarter than I am. Excellent data kanue, even though I can't read it without an explanation
	-Best Admiral 3ver

kanue
Global Moderator

Posts: 1,796

Accurate-Bugle-Strike skill Oct 11, 2015 17:29:48 GMT Mountbatten likes this

Quote

Post by kanue on Oct 11, 2015 17:29:48 GMT

Oct 11, 2015 17:26:13 GMT Suvorov said:

Oct 11, 2015 17:23:49 GMT kanue said:

You did your math homework! Excellent, now I appreciate Suvorov in EW4 even more!

I always appreciate general with these skills. Unfortunately, I don't have enough emblems to buy Suvorov.

Houses are highly illiquid assets with huge idiosyncratic risk, funded by a short position in bonds.

Suvorov
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The Beast from the East

Posts: 822

Accurate-Bugle-Strike skill Oct 11, 2015 17:31:01 GMT Napoleon Bonaparte and Dobeln like this

Quote

Post by Suvorov on Oct 11, 2015 17:31:01 GMT

Oct 11, 2015 17:29:48 GMT kanue said:

Oct 11, 2015 17:26:13 GMT Suvorov said:

I always appreciate general with these skills. Unfortunately, I don't have enough emblems to buy Suvorov.

If I could, I would deliver some emblems for you. Not having Suvorov means missing a crucial part of life

nooblord Captain Posts: 54	Accurate-Bugle-Strike skill Oct 12, 2015 15:25:04 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by nooblord on Oct 12, 2015 15:25:04 GMT wait, so skills like Bugle and Accuracy are only effective if the unit you're attacking has damage reduction from things like cities or terrain?
	Last Edit: Oct 12, 2015 15:25:59 GMT by nooblord

Napoleon Bonaparte
Darth Vader

Posts: 2,294

Accurate-Bugle-Strike skill Oct 12, 2015 17:04:03 GMT

Quote

Post by Napoleon Bonaparte on Oct 12, 2015 17:04:03 GMT

Oct 12, 2015 15:25:04 GMT nooblord said:

wait, so skills like Bugle and Accuracy are only effective if the unit you're attacking has damage reduction from things like cities or terrain?

True, bugle is actually defense for infantries while being attacked while the accuracy is defense for cannon/artilleries while being attacked.

kanue
Global Moderator

Posts: 1,796

Accurate-Bugle-Strike skill Oct 13, 2015 5:09:18 GMT

Quote

Post by kanue on Oct 13, 2015 5:09:18 GMT

Oct 12, 2015 15:25:04 GMT nooblord said:

wait, so skills like Bugle and Accuracy are only effective if the unit you're attacking has damage reduction from things like cities or terrain?

The test above only shows that a general with bugle/strike/accurate is more effective when attacking enemy who has damage reduction from terrain. But is does not imply anything on attacking enemy in open area. We need more test to answer that question. EasyTech might make some fanciful descriptions for flat damage increase skills, for example.

Houses are highly illiquid assets with huge idiosyncratic risk, funded by a short position in bonds.

saltin
Administrator

Posts: 3,407

Accurate-Bugle-Strike skill Oct 13, 2015 9:30:17 GMT via mobile

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Post by saltin on Oct 13, 2015 9:30:17 GMT

I always wondered what the heck was "depriving enemy of evasion" meant ,since there is no real dodge in EW4 and combat units always hit and never "evade" or miss.
And now I got my answer so long after I started playing European war 4 !

Awsome post kanue ! Shedding light on darkness!

shogigut Corporal Posts: 1	Accurate-Bugle-Strike skill Oct 13, 2015 13:44:30 GMT via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by shogigut on Oct 13, 2015 13:44:30 GMT My impression is that the lower bound of damage dealt by generals with these skills is somewhat higher, i.e. you seldom get disappointingly low damage from these generals

Mountbatten Global Moderator Dieppe was staged Posts: 7,562	Accurate-Bugle-Strike skill Oct 13, 2015 13:49:06 GMT via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Mountbatten on Oct 13, 2015 13:49:06 GMT I just thought that it would deal a little bit more damage. But it's circumstantial
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nooblord
Captain

Posts: 54

Accurate-Bugle-Strike skill Oct 13, 2015 19:11:26 GMT

Quote

Post by nooblord on Oct 13, 2015 19:11:26 GMT

Oct 13, 2015 5:09:18 GMT kanue said:

Oct 12, 2015 15:25:04 GMT nooblord said:

wait, so skills like Bugle and Accuracy are only effective if the unit you're attacking has damage reduction from things like cities or terrain?

The test above only shows that a general with bugle/strike/accurate is more effective when attacking enemy who has damage reduction from terrain. But is does not imply anything on attacking enemy in open area. We need more test to answer that question. EasyTech might make some fanciful descriptions for flat damage increase skills, for example.

Ahh, that clears some things up.