Accuracy definition: It is defined as how close the measured value to the target/true/reference value.
Decisions can be made highly effective if the measurement data have high accuracy and precision. High accuracy and precision in the measurement data can be achieved only if there will be small variations in the measurement system.
Instrument/gage with high accuracy and precision will always lead to better decisions, improve quality of observed/measurement data, and reduce chances of errors.
Table of Contents
Accuracy definition | Accuracy Meaning
Accuracy is the degree of closeness of the measurements to the target or reference value. Precision on the other hand is the degree of closeness of measurements with each other.
The above figure shows that the measurement system/data is accurate as the average of measured values is very close to the target value, but not precise because the spread of measurements is large i.e. measurement values are away from each other.
The measuring equipment must have adequate precision and accuracy. If these two conditions are not met, then the quality of measurement data obtained by the instrument/gage will be poor or low which may lead to wrong decisions and increase the cost of the product due to poor quality.
In MSA and calibration process, the following measurement system variations or errors are measured and controlled to improve the quality of the product and process.
- Repeatability
- Reproducibility
- Bias
- Stability or Drift
- Linearity
Bias often referred as “Accuracy” error whereas Repeatability and Reproducibility often referred as “Precision” error.
Accuracy Vs Precision | Difference
Explore the below link to understand the difference between accuracy and precision with pictorial examples.
Examples of Accuracy
Example-1: Let’s measure the standard weight of 10Kg on weighing scale-1. And the values of the measurement obtained are 10.15kg, 10.20kg, 10.50kg, 11.4kg, and 12.10kg respectively. The result indicates that our weighing scale is Accurate i.e. average of measurements is near to the specified/target value, but not precise i.e. measurements are not a consistent or large variation in measurements.
Suppose if we measuring the same standard weight on weighing scale-2, then we obtained the values of 12.15, 12.18, 12.35, 12.20, and 12.41kg respectively. That means weighing scale-2 is more precise than weighing scale -1 as all values are very consistent/close to each other. But weighing scale-2 is not accurate because the average of measurements is away from the target/reference point.
Example-2: Let’s measure the diameter of the pipe 25mm with a micrometer. The measurement values obtained are 25.21, 25.10, 25.15, 24.10, and 26.15mm respectively. The result indicates that our instrument is accurate i.e. average of measurements is very near to the target/specified value, but not precise i.e. large variation in measurements.
Example-3: Suppose we have an object and let’s say the temperature of the same is 30 deg. celsius. But the thermometer is showing readings 30.5, 30.3, and 30.10 degrees respectively. The result indicates that the thermometer is accurate and precise i.e. degree of closeness of measurements to specified/target value is very high and measurements are consistent in nature.
Related Articles
upgfiw
Hello very cool website!! Man .. Excellent .. Superb .. I will bookmark your blog and take the feeds also…I am satisfied to seek out so many useful information right here in the post, we’d like work out more strategies on this regard, thank you for sharing. . . . . .
I in addition to my friends have been digesting the good recommendations on your web page and all of the sudden I had an awful feeling I had not thanked the site owner for those techniques. All the people were definitely absolutely thrilled to see all of them and have in actuality been making the most of these things. Appreciation for truly being very helpful and for deciding on certain perfect tips most people are really desirous to be aware of. My very own sincere apologies for not saying thanks to you sooner.
Your writing is so relatable and down-to-earth It’s like having a conversation with a good friend Thank you for always being real with your readers
Your honesty and vulnerability in sharing your personal experiences is truly admirable It takes courage to open up and I applaud you for it
This blog post has left us feeling grateful and inspired
Wow! This blog looks exactly like my old one! It’s on a totally different subject but it has pretty much the same page layout and design. Wonderful choice of colors!
I was studying some of your blog posts on this site and I conceive this internet site is really informative ! Keep on putting up.
It is appropriate time to make some plans for the longer term and it is time to be happy. I’ve learn this publish and if I may just I want to suggest you some fascinating things or advice. Perhaps you could write subsequent articles regarding this article. I want to learn even more issues about it!
When I initially commented I clicked the “Notify me when new comments are added” checkbox and now each time a comment is added I get four emails with the same comment. Is there any way you can remove people from that service? Cheers!
I am continuously looking online for posts that can aid me. Thank you!
I was reading some of your blog posts on this internet site and I think this internet site is really instructive! Continue posting.
I have been examinating out some of your posts and i can state clever stuff. I will make sure to bookmark your site.
I enjoy the efforts you have put in this, appreciate it for all the great content.
Howdy! I know this is kind of off topic but I was wondering which blog platform are you using for this site? I’m getting tired of WordPress because I’ve had problems with hackers and I’m looking at alternatives for another platform. I would be fantastic if you could point me in the direction of a good platform.
I’m impressed, I must say. Really rarely do I encounter a weblog that’s each educative and entertaining, and let me let you know, you have hit the nail on the head. Your concept is excellent; the difficulty is something that not enough persons are speaking intelligently about. I am very joyful that I stumbled across this in my search for one thing regarding this.
I wanted to thank you for this great read!! I definitely enjoying every little bit of it I have you bookmarked to check out new stuff you post…
I think you have remarked some very interesting details , thankyou for the post.
I am not rattling fantastic with English but I come up this real leisurely to read .
Excellent blog here! Also your website loads up very fast! What host are you using? Can I get your affiliate link to your host? I wish my site loaded up as quickly as yours lol
I like what you guys are up too. Such intelligent work and reporting! Carry on the excellent works guys I have incorporated you guys to my blogroll. I think it’ll improve the value of my website 🙂
Very well written story. It will be beneficial to anyone who employess it, as well as yours truly :). Keep doing what you are doing – i will definitely read more posts.
Very interesting information!Perfect just what I was looking for! “To be without some of the things you want is an indispensable part of happiness.” by Bertrand Russell.
Thanks for the sensible critique. Me and my neighbor were just preparing to do a little research on this. We got a grab a book from our area library but I think I learned more from this post. I am very glad to see such wonderful information being shared freely out there.
I just couldn’t depart your web site before suggesting that I really enjoyed the standard information an individual provide on your visitors? Is going to be again ceaselessly in order to check out new posts
I’m truly enjoying the design and layout of your site. It’s a very easy on the eyes which makes it much more enjoyable for me to come here and visit more often. Did you hire out a designer to create your theme? Excellent work!
Woh I love your articles, bookmarked! .
I will immediately take hold of your rss feed as I can’t find your e-mail subscription hyperlink or newsletter service. Do you’ve any? Kindly let me realize so that I may just subscribe. Thanks.
you’re in reality a just right webmaster. The site loading velocity is incredible. It kind of feels that you are doing any unique trick. Moreover, The contents are masterwork. you have done a magnificent task in this topic!
I went over this website and I believe you have a lot of wonderful info , saved to favorites (:.
Woah! I’m really loving the template/theme of this website. It’s simple, yet effective. A lot of times it’s challenging to get that “perfect balance” between usability and visual appeal. I must say that you’ve done a awesome job with this. In addition, the blog loads very quick for me on Opera. Excellent Blog!
My brother recommended I might like this blog. He was totally right. This post actually made my day. You can not imagine simply how much time I had spent for this info! Thanks!
My spouse and i have been quite contented when John could finish off his web research using the ideas he was given through your web site. It’s not at all simplistic to simply be giving for free solutions which some people could have been making money from. And now we keep in mind we’ve got the writer to give thanks to because of that. These illustrations you have made, the straightforward website menu, the friendships you can help to create – it’s everything unbelievable, and it’s really letting our son and the family feel that the subject matter is pleasurable, which is particularly essential. Many thanks for the whole lot!
Great site. A lot of useful information here. I am sending it to some friends ans also sharing in delicious. And certainly, thank you on your effort!
Awsome website! I am loving it!! Will be back later to read some more. I am bookmarking your feeds also.
I was very pleased to find this web-site.I wanted to thanks for your time for this wonderful read!! I definitely enjoying every little bit of it and I have you bookmarked to check out new stuff you blog post.
Loving the info on this website , you have done great job on the posts.
you could have an incredible blog here! would you like to make some invite posts on my weblog?
Hmm it appears like your website ate my first comment (it was super long) so I guess I’ll just sum it up what I had written and say, I’m thoroughly enjoying your blog. I too am an aspiring blog blogger but I’m still new to the whole thing. Do you have any suggestions for newbie blog writers? I’d certainly appreciate it.
Thanx for the effort, keep up the good work Great work, I am going to start a small Blog Engine course work using your site I hope you enjoy blogging with the popular BlogEngine.net.Thethoughts you express are really awesome. Hope you will right some more posts.
I’ve been exploring for a little bit for any high quality articles or weblog posts on this kind of house . Exploring in Yahoo I eventually stumbled upon this web site. Studying this info So i’m happy to express that I have an incredibly good uncanny feeling I came upon just what I needed. I such a lot no doubt will make certain to do not fail to remember this site and provides it a glance regularly.
It’s really a great and helpful piece of info. I’m satisfied that you simply shared this helpful info with us. Please stay us informed like this. Thank you for sharing.
This is very attention-grabbing, You’re an overly skilled blogger. I’ve joined your feed and sit up for in search of more of your magnificent post. Additionally, I’ve shared your web site in my social networks!
I’ll immediately grab your rss feed as I can’t find your e-mail subscription link or e-newsletter service. Do you have any? Kindly let me know in order that I could subscribe. Thanks.
Hiya, I’m really glad I’ve found this info. Nowadays bloggers publish only about gossips and net and this is actually frustrating. A good website with exciting content, that’s what I need. Thank you for keeping this web-site, I’ll be visiting it. Do you do newsletters? Can’t find it.
I’d should verify with you here. Which is not one thing I normally do! I get pleasure from studying a publish that can make folks think. Additionally, thanks for permitting me to remark!
Real excellent info can be found on site. “Prayer is the wing wherewith the soul flies to heaven, and meditation the eye wherewith we see God.” by Ambrose of Milan.
It’s really a great and useful piece of info. I’m satisfied that you simply shared this helpful information with us. Please stay us up to date like this. Thanks for sharing.
Hello! I could have sworn I’ve been to this website before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely delighted I found it and I’ll be book-marking and checking back frequently!
Hi! I know this is kinda off topic however , I’d figured I’d ask. Would you be interested in trading links or maybe guest writing a blog post or vice-versa? My website discusses a lot of the same subjects as yours and I believe we could greatly benefit from each other. If you are interested feel free to send me an e-mail. I look forward to hearing from you! Wonderful blog by the way!
obviously like your web-site but you need to check the spelling on several of your posts. Several of them are rife with spelling issues and I in finding it very troublesome to inform the reality on the other hand I will surely come back again.
I enjoy you because of all your valuable efforts on this web page. Kim delights in going through internet research and it’s easy to understand why. All of us learn all concerning the compelling medium you produce good secrets on the website and strongly encourage participation from people about this topic so our favorite daughter has been learning a whole lot. Take advantage of the rest of the new year. You are performing a remarkable job.
It’s in point of fact a great and useful piece of information. I’m glad that you just shared this helpful info with us. Please stay us informed like this. Thank you for sharing.
You should take part in a contest for one of the best blogs on the web. I will recommend this site!
I am glad to be one of the visitors on this great web site (:, regards for putting up.
Excellent beat ! I wish to apprentice while you amend your website, how can i subscribe for a blog website? The account helped me a acceptable deal. I had been tiny bit acquainted of this your broadcast offered bright clear concept
I am no longer certain where you’re getting your info, but great topic. I must spend a while finding out much more or figuring out more. Thanks for wonderful info I was in search of this info for my mission.
There is apparently a bundle to know about this. I suppose you made various good points in features also.
Im no longer positive where you are getting your info, but great topic. I must spend a while studying much more or working out more. Thanks for great info I was in search of this info for my mission.
It is in point of fact a nice and helpful piece of information. I am happy that you just shared this helpful info with us. Please keep us up to date like this. Thanks for sharing.
Youre so cool! I dont suppose Ive learn anything like this before. So nice to search out anyone with some authentic ideas on this subject. realy thank you for starting this up. this website is one thing that’s wanted on the web, someone with a little bit originality. helpful job for bringing one thing new to the internet!
I am often to blogging and i really appreciate your content. The article has really peaks my interest. I am going to bookmark your site and keep checking for new information.
I’ll right away take hold of your rss feed as I can’t find your email subscription hyperlink or newsletter service. Do you’ve any? Please allow me realize so that I could subscribe. Thanks.
I just couldn’t depart your site before suggesting that I extremely enjoyed the standard info a person provide for your visitors? Is gonna be back often in order to check up on new posts
The Salt Trick is a natural technique that involves using specific salts, such as Blue Salt, to enhance male performance
I have recently started a website, the info you offer on this web site has helped me tremendously. Thank you for all of your time & work.
The Natural Mounjaro Recipe is more than just a diet—it’s a sustainable and natural approach to weight management and overall health.
Hi there! This post couldn’t be written any better! Reading through this post reminds me of my previous room mate! He always kept talking about this. I will forward this article to him. Pretty sure he will have a good read. Thank you for sharing!