I like using sets to decide which things I’m focusing on (the “I want to know how normal this thing is” group) and which things are in my reference group (the “I want to take this lot as the basis for all my comparisons” group).Ī lot of the time, you’ll want all things to be in both groups. Here’s a quick explanation of why before we move onto how to set it all up. ![]() OK, so Z scores are a way of normalising data to do comparisons. If my shot put Z score is +2.1 compared to other athletes while my hurdles score is -0.3 compared to other athletes, I know that I need to work on my hurdles more than my shot put. That makes comparing my performance across my different events difficult! But Z scores let you compare. The scale of those units is different too – I’ll be able to throw the shot put many times further than I can jump. I’m doing seven different events, and the units they’re measured in are different – some are in metres, like the high jump and the shot put, and some are in seconds, like the hurdles and the sprints. It also means you can normalise comparisons over different metrics with different scales. ![]() But in the real world, the spread of heights is much greater, so the standard deviation of heights is bigger, which means that my Z score is lower. In the hypothetical example where every other man is between 5’8″ and 5’10”, the spread of heights is small, which means that the standard deviation of heights would be really low, which means that my Z score would be really high. Standard Deviation of Heights (which I don't know) So, my height as a Z score compared to men in England would be: This relative difference from average can be expressed in a Z score, which is essentially saying, “how many standard deviations above or below average is this value?”. But as it is, I’m never the tallest guy in the room, so while I’m taller than average, I only feel averagely tall. If every man in England (apart from me) was somewhere between 5’8″ and 5’10”, I’d be an absolute giant, relatively speaking. However, averages don’t tell you anything about the spread of data, which means that taking the simple difference in height doesn’t tell you anything about how tall I am relative to everybody else. ![]() I’m 6’3″ (or 190cm), and I live in England, where, according to wikipedia at the time of writing, the average male height is 5’9″ (or 175cm). It’s all in a Tableau Public workbook here.įirstly, what’s a Z score, and why would we want to use one?Ī Z score is a way of looking at how much more, or less, something is from average in a relative way that accounts for the spread of data. We’ll have a look at how the things differ from each other across various different manufacturing dimensions, and use that to see what to do with the thing we’re currently building. What are Z scores? How can you calculate them in Tableau? And once you’ve done that, what can you use them for? This blog will cover all of that, using some fake data from a factory that produces things. | Gwilym Lockwood Calculating dynamic Z scores in Tableau
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![]() Follow the same sequence but press the "Y" key to violently destroy all enemies on the screen. To destroy an enemy's main fort, regardless of its location on the map, press and hold the "Alt" key and then press "G". To destroy an entire fortress with a single click, press and hold the "Alt" key and then press "K", then select the fortress to destroy. To destroy a single enemy press and hold the "Alt" key and then press "Z", then choose an enemy by clicking on it. If a particular enemy or fortress is making the game difficult for you, you can use various cheats to attack that are available to you after you have entered the master code. So that you don't need to use gold, press and hold the "Alt" key and then press "F" to make all items and resources free. You can do this many times within one level. Press and hold the "Alt" key and then press "X" to increase your gold reserves by 1,000 units and your popularity by 100. ![]() To increase both levels, enter the master code, then start any mission. You need two things to build a sturdy fortress in any "Stronghold" game: lots of gold to acquire resources and a high level of popularity to command your subjects. You can also use this code within the game to switch between characters, thus allowing you to know all the abilities of each crusader. Press and hold the "Alt" key and then press the "C" key to unlock all missions so you can select and play them in any order you like. Start the game with the master code activated and go to the level selection screen. To see all the "Stronghold: Crusader" missions without having to go through and unlock each mission one by one, enter the unlock code. You will now have access to other in-game cheats. Press and hold the "Shift" and "Alt" keys and, while holding them, press the "A" key. To be able to use other cheats within the game, you must load it and wait for the menu screen to appear. The game, whose final update was version 1.2, contains a group of tricks that will help players progress through missions at a faster pace, this in order to open more game content. The PC game "Stronghold: Crusader" is an update for the FireFly Studios game about the Middle Ages and the management of civilizations, which places the action in an eastern world where there are crusaders and fortresses. (Or build for free) ALT + Z Destroy selected enemy. ALT + C Cycle characters or unlocks all missions. Now press: ALT + X Increases popularity by 100 and money by 1000. To destroy the enemy's main stronghold, wherever it is located on the map, hold "Alt" and press "G." Hold "Alt" and press "Y" to violently destroy all enemies on-screen.The PC game " tronghold: Cru ader" i an update for the FireFly tudio game about the Middle Age and the management of civilization, which place the action in an ea tern world where there are Note: You may need to type TRIBLADE2002 to get the cheats to work. To destroy an entire fortress with one click, hold "Alt" and press "K," then choose the fortress to be destroyed. To destroy a single enemy, hold "Alt" and press "Z," then choose an enemy by clicking him. If one particular enemy or fortress is making your game difficult, you can use several cheat attacks open to you after entering the master cheat code at the title screen. ![]() To take your gold out of the equation altogether, hold "Alt" and press "F" to make all items and resources free to purchase. You can do this multiple times within a level. Hold "Alt" and press "X" to increase gold by 1,000 and Popularity by 100. To increase both of these, enter the master code, then start any mission. You need two things to build a strong fortress in any "Stronghold" game: plenty of gold to buy resources, and a high Popularity rating to command your subjects. |
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