Computation

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/

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

🛎️ 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

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.

✨️🏸Happy Singles Doubles (Men's and Women's)✨️ Location: Hong Kong Ball: RSL Supreme Fee: Depends on the number of participants (split equally among participants,e.g., Total $59 2 people = $30@) (Extra administrative fee: $20) Number of Participants: Max 6 (Men: Junior High or below, Women: Happy to near Elementary) a) Participants must bring their own rackets, and registration is only open to members of this group☆ b) Members who have never participated before will have priority registration, while those who have participated can be placed on the waiting list. If no one registers within 2 days of the event being posted, the waiting list will be filled according to the order of registration. Interested parties please join to our \*\* [WhatsApp Group](https://chat.whatsapp.com/FCBdnusno62F2WhuEwO2wV?mode=gi_t) 98729086 to register! The goal is to have fun playing ball; please don't be sullen or act like a coach. If you have friends who want to have dinner together, you can join after playing badminton time.

**生活中的壓力有時令你喘不過氣？** **身體感覺疲乏，有時覺得連睡眠都解決不了？** **身體有由來已久的痛症，一直無解？** **內心有心結未解，創傷未癒？** * 研究證實，頌缽的共鳴共振，可直達人體細胞深處，促進血液循環，提升自律神經功能，激發人體自癒力 * 運用頌缽音頻和振動調節失衡或淤塞的脈輪，令身心運作回復和諧狀態 * 頌缽的和諧音聲和振動，能直達人體細胞深處，促進血液循環，提升自律神經功能，活化內在能量流動，對身體和心靈進行淨化，從而得到療癒 * 療癒不是消除病症，而是從身、心、靈層面，協助個案找回自己的內在力量，提升其自我修復能力，令其整體狀態變得更好 *療癒開始前，會進行約10-15分鐘的簡短的諮詢，了解客人的具體問題，例如身體哪部份不適，情緒上的困擾等，然後制定個人化的療癒程序。* 首次體驗價：HKD450 (標準價：HKD780) 由於是1對1活動，具體舉行日期和時間以預約為準。 預約請聯絡90356039 (whatsapp)，或RSVP後留下聯絡電話。不設walk-in。

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

Let’s play with colours this time. Treat the colour as subject or splash some colours around the subject you choose to shoot. For a keen eye, the opportunities are abundant on the street. Capture emotions of single or multicolours… look for colours around things, people, storytelling, or even go abstract… Have a look at some pictures on the theme in this event’ album below. **Meeting Time & Place:** **4pm** at **Central MTR Station Exit K** (street level) We will meet at **Central MTR Station Exit K (street level)** at **4pm,** move around the Central area taking pictures, and then regroup for a drink, socialising and photo sharing **5:30pm** at **The China Bar** (Ho Lee Commercial Building, 44 D'Aguilar St, Lan Kwai Fong, Central). Please post **YOUR BEST FIVE IMAGES** only for this outing on the meetup site. **FINALLY:** For every image you post, please comment on at least one other image, no matter if you think you are qualified to comment or not. You can always give some constructive comments with regard to Colour, Tone, Light, Action, Pattern, Balance, Composition, Visual and Emotional appeal of the image/s. This group is about sharing and learning from each other.

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

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

**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

We are bringing Microsoft Build sessions to Columbus Ohio! The Central Ohio Azure Meetup and Central Ohio .NET Developer's Group (CONDG) are coming together to bring some of the labs and breakouts from Microsoft Build to your backyard. In this free, 1 day event, you are going to Build stuff with us! And yes, there will be free food. So please RSVP for a head count!

Join us as we get together to see Paul Rudd in the latest comedy-drama-musical from John Carney, POWER BALLAD! The film follows a washed-up wedding singer, a fading boy band singer and a stolen hit song. Here’s a description, trailer and plan for this event: DESCRIPTION: Rick, a washed-up wedding singer, and Danny, a fading boy band star, bond over music and a late-night jam session. When Danny turns Rick's song into a hit, Rick sets out to reclaim the recognition he believes he deserves. Power Ballad is written/directed by John Carney, the master of the modern musical and creative mind behind Once, Begin Again and Sing Street! It stars Paul Rudd, Nick Jonas, Peter McDonald, Marcella Plunkett, Havana Rose Liu and Jack Reynor. BUZZ & ACCLAIM: The film premiered to rave reviews at this year’s Dublin International Film Festival where critics call it “a sure-fired crowd-pleaser” that “just might be the feel-good hit of the year!” Others say, “Paul Rudd delivers a career-best performance in this charmer” that’s both “hilarious and deeply moving." The film continues John Carney’s “long run of success with yet another charmer” and “a sharp, hopeful crowd-pleaser that strikes the right notes!” SUMMER OF ICE CREAM, VOL 2: SHAKE NO. 8! Ranked the #1 Ice Cream Shop in Columbus, this is a perfect early stop on our Summer of Ice Cream! Their menu uses made-from-scratch recipes in an array of traditional, specialty and vegan shakes, hot cocoa, crepes, waffle sticks, specialty coffee & espresso, and more! Their specialty shakes are as delicious as they are over-the-top and they offer an extensive vegan menu! You can check out their full menu here: [https://www.shakeno8.com/menu.php](https://www.shakeno8.com/menu.php) PLAN: Please purchase your ticket for the 6:45pm showing and we’ll meet in the upstairs lobby between 6:25 and 6:35pm! Advance ticket purchase is advised for this opening night showing! Once you have yours, please list your seat number in the Comments section of this event. We'll head to nearby Shake No. 8 immediately following the show! Should be a fun one, Dan

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

http://photos2.meetupstatic.com/photos/event/2/a/9/6/600_348310902.jpeg Instructor - Crow, HPS Class fee is $30 at the door or approved exchange RSVP with Advance pay of $25 (discounted) by PayPal on the web or by contacting Enchanted Elements (614) 437-2642. Reservations made directly to Enchanted Elements will be added to the class list manually not online. Private Instruction ~ Closed to the Public ~ Initiated Members Only Please come prepared for ritual. Blessings ~ Crow