Compilers

When learning statistics, one of the most fundamental yet usually grossed over concepts is that of **variance** (i.e. the square of the standard deviation in normal distribution). As we know, virtually all statistical operations which measure deviations of individual values from the norm involve adding the **SQUARED differences between the two numbers**. However, very few instructors could explain why we have to use squares rather than just the absolute values of the difference (or other even powers such as 4, if the intention is to avoid the negatives). This tutorial shall cover this in a convincing manner. Secondly, while we all know the variance of a SAMPLE is arrived by dividing (n-1) of the sum of squared differences, where n is the number of observations, few can articulate the rationale behind it. This tutorial shall also prove step by step why this is case, so after this you could appreciate the logic behind this ingenious insight instead of just reciting it like a medieval myth.

Welcome to all levels. For the beginners, I will teach you some basic skills and demonstrate and you'll pick up easily. Practice makes perfect! We will practice the club S, 5 and fairway wood 3, 5 and the driver. Looking forward to see you and let's have fun. Sportswear is fine. The equipment and balls will be provided at the driving range. ★★PLEASE let me know through Whatsapp or Calling before u sign up or RSPV and my HK number is 93798380. Otherwise, the chance of attendance will be passed to the one who did say hi to me first. Lastly, remember to let me know 24 HOURS before the Meetup if you will be late or can't attend. Otherwise, the one who absent without notice would be blacklisted and not welcome to join this Meetup anymore. Cheers, Terry Wong

Hong Kong residents cannot use Claude officially. I’ll share how I use Cursor as an alternative in my daily operations 香港暫時仲未正式用到 Claude，我會分享下平時係點樣用 Cursor 嚟做替代方案。 https://cursor.com/

大家好, 我們誠摯地邀請大家來參加我們的聚會。請大家各自帶一本最近閱讀的書 (中英文也可以, 我們建議文學)，分享您對這本書的想法和感受。這將是一個輕鬆愉快的環境，讓我們一起交流和啟發。 費用: 免費 聚會地址是：上環文咸西街44-46號903室 Whatsapp booking: 4449 0049 Website: https://midnightbliss-studio.com/ IG: midnight_bliss_studio 期待與大家見面。 祝好, Cultural Hub We sincerely invite you to our book club. Please bring a book you've recently read (in Chinese or English, it's fine but we prefer literature), and share your thoughts and feelings about it. This will be a relaxed and enjoyable environment for us to exchange ideas and inspire each other. Fee: Free RSVP Whatsapp booking: 4449 0049 Location: Suite 903, 44-46 Bonham Strand West, Sheung Wan

Star Road Language Exchange 🌃 . *Update: Click Attend and get $20 discount! . Welcome to Star Road Language Exchange. In this group, everyone is a star! :) . Enjoy learning a new language or meet new friends in a relax atmosphere. . We try to organise every week. Looking forward to seeing you. :) . Time: Sunday 5:15-7:15 Place: Rizzy Coffee, LKF, Central , HK (G/F, LKF 29, 29 Wyndham St, Central Hong Kong) https://maps.app.goo.gl/pVyy1Hbj8i95QR227?g_st=ic . Entrance Fee: $40 (Plz buy at least 1 drink!) Click Attend and get $20 discount! . Proposal 😂 17:15 Star Rd Lang Ex 19:15 Dinner together . Whatsapp (65078638) me for any enquiries . Check out Star Road Language Exchange on Meetup https://meetu.ps/c/4vfpY/xy0yQ/a . #HK #English #friends #language

恆常玩pickleball活動，不定期開場，target每場6-8人攤分場錢，人均低至$50/2hrs，包球拍租借，有興趣入嚟先😁 報名方法: **如果你想更深入了解其他會員/優先獲得活動名額及資訊，歡迎填妥[簡單表格](https://forms.gle/VuduPPGrMwCFiY2S9)加入Whatsapp會員限定群組，連結：** https://forms.gle/VuduPPGrMwCFiY2S9 本群（Fun & Positive Hong Kong X L&G）旨在協助大家輕鬆快樂交友，排憂解難，擴闊社交圈子，成為大家繁忙生活中嘅一片可以抖下氣嘅綠洲😉大家等緊你呀！～🤗🥳😉👍 **Your Pal,** **Fun & Positive Hong Kong X L&G Admin Team🥳😎**

Fee 14ppl $75 4-6pm court 2,3 請大家遵守以 1:請大家不要在遊戲其間進行羽毛球技術指導. 2:男與女閒聊時請保持一隻手距離. 3:遊戲已例明 羽毛球等級(ab,li,i 等等), 請按照自己所屬等級參與遊戲. 4:各下參加左的活動有指定場號, 如果自行走向其他埸由我們舉辦的活動的埸地打波, 我地可能會給予警告, 請不要挑戰我們的忍耐力。 5:如果少於48小時內取消出值, 都請交出值應付之金額。 如有違反, 一律blacklist. If you join my game for first time please send me your mobile no. to confirm your spot. Tel: 97843661 Coming Please Whatsapp or message me through meetup as soon as possible if you can't come. ‧ We will be playing 21 points doubles match ‧ Strictly NO BEGINNER ‧ The event is not first come first serve, I will pick suitable players in order to balance the level of the game. So if you are not on the attending list, please don't feel being offended, thanks for understanding ‧ Cancellation policy: Cancellation deadline is 48 hours prior to the start time of the game. Cancellation past the deadline will be marked as no-show.11

Fee: 7people $75/per 7-9pm Court#1 請大家遵守以 1:請大家不要在遊戲其間進行羽毛球技術指導. 2:男與女閒聊時請保持一隻手距離. 3:遊戲已例明 羽毛球等級(ab,li,i 等等), 請按照自己所屬等級參與遊戲. 4:各下參加左的活動有指定場號, 如果自行走向其他埸由我們舉辦的活動的埸地打波, 我地可能會給予警告, 請不要挑戰我們的忍耐力。 5:如果少於48小時內取消出值, 都請交出值應付之金額。 如有違反, 一律blacklist. If you join my game for first time please send me your mobile no. to confirm your spot. Tel: 6019 8622 Ice Please Whatsapp or message me through meetup as soon as possible if you can't come. ‧ We will be playing 21 points doubles match ‧ Strictly NO BEGINNER ‧ The event is not first come first serve, I will pick suitable players in order to balance the level of the game. So if you are not on the attending list, please don't feel being offended, thanks for understanding ‧ Cancellation policy: Cancellation deadline is 48 hours prior to the start time of the game. Cancellation past the deadline will be marked as no-show and need to pay the no-show Fee.

🛎️ 全新活動: Gen Z Board Game聚會 (1995年或以後出生的朋友仔聚埋一齊玩下board game識下朋友仔!) 🛎️ 地址: 觀塘成業街 16 號怡生工業中心 A 座 2 樓 A2 室 🏢 好多時會有客人問我哋我哋嘅Meetup Party Games活動會玩啲乜嘢？其實就係例如9 Upper, 狼人真言，Flip 7，歌迷序會等等好玩流行嘅輕鬆桌遊，由當日嘅活動主持決定最終玩邊幾隻！ 其實玩邊隻game唔係重點。重點係個活動好唔好玩！我哋好多活動都有好多人參加. 所以不必多說，你應該知道究竟發生了什麼事！ \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* **今日活動資訊:** 費用: [$105 / Girls $85] Pay at entrance. 包飲品一盒, extra飲品每盒$5. 🔔 人多, 或員工/主持忙於教玩遊戲時可能沒暇收取場費, 請利用櫃面PayMe code/Ali Pay /FPS號碼自行支付. 如發現有故意走數情況, 會被放進Meeple Tree 黑名單. 🔔 必須在此報名. 🔔 場地沒有食物提供, 但歡迎帶外賣上來食. 🔔 宣傳其他場地/放飛機/遊戲過程中態度惡劣者會被放進黑名單. 🔔 入埸請除鞋. 埸內拖鞋祗供店內用, 請勿著出店外. 🔔 報名參加Meetup活動, 當系統問你"Are you bringing anyone"時, 如果你祗是一個人來, 毋須㩒+1 (+1代表會帶朋友來的意思). 🔔 我哋嘅活動主持人有時會因為工作或者學業關係臨時嚟唔到，Meeple Tree 保留臨時更換主持嘅可能性。🙏 🔔 本會因放飛機(活動開始前24小時內退出者)被移除人數: 103 🔔 Meeple Tree保留參加者名單最後決定權. 🔔 Follow我哋IG: mtboardgame / boardgame_hk

First timer, please leave contact. Please put your name on the waiting list which will be updated later. My WhatsApp / Signal: 9528-5003 \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- Date: 31 May 2026 (Sun) Time: 7 to 10 pm (2+2+2) Courts: #A, #B Level: All \# of Players: about 16 Shuttlecock: Moxiang White #2 Format: Doubles Sports Club Membership Fee: $30 (PayMe / FPS #: 9528-5003) Venue: Tai Wo Hau Estate Community Centre 15 Tai Wo Hau Road, Kwai Chung Tai Wo Hau MTR 大窩口社區中心 葵涌 大窩口道 15 號 大窩口站 Direction (from Tai Wo Hau MTR to community center): https://bit.ly/Tai-Wo-Hau

We have moved to guild.host. Look us up there. https://guild.host/events/buckeye-cocoaheads-rcavwd

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

Topic to be announced. **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Whether you've never done improv before, or you've done it for so long you knew Del Close on a personal level, or anywhere in between, come join us! Swing by *Gresso's* for the **Columbus Improv Comedy Meetup** for some fun and games! The idea behind improv is to create entire scenes from scratch based on a suggestion from the audience. This can be done in game form, like *Whose Line Is It Anyway*, *ComedySportz*, or *Wild 'n Out*; it could also be done to tell stories, like *Middleditch and Schwartz*. Our meetup, which is central Ohio's longest running (and free!) weekly comedy event, brings the games (and occasionally different forms) for you to play in a safe, supportive, and compassionate environment. Not only is it a lot of fun, but you get to work on thinking faster on your feet, plus it's an excellent way to meet new people and make friendships that'll last a lifetime! Ask yourself if you want to join the **Columbus Improv Comedy Meetup**, and say "Yes, And" that you'll have fun!

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

How to be a Better Communicator Communication is everything in life You are only as successful as your ability to communicate. \- What if you could confidently talk to anyone? \- What if you had the ability to calmly control every conversation? \- What if you could close that sale\, ask for that date\, make new friends\, repair problematic relationships\, get that raise\, or effortlessly express any idea with confidence? You can! The secret to success relies on your ability or inability to effectively communicate. Attend a free seminar and gain a better ability to communicate. Hosted by the Church of Scientology of Central Ohio 1266 Dublin Road, Columbus, OH 43215 For more information, contact Rhiannon, the Event Host at 614-221-5024

**Latest Dojo Location!** **Knotty Pine Brewing** 1765 W 3rd Ave, Columbus, OH 43212 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for speakers for our Monthly Meetups! Fill out the form if you are interested in presenting to the Python Community. https://forms.gle/ehSfUAC2WgR34Crq9