🎓 בגרות 471 קיץ 2026 מועד א שאלה 2-רגרסיה.

📌What's in the video: In this video we will solve a question on linear regression from the Mathematics 471 Summer 2026 Term A exam. We will learn step by step how to calculate the mean and standard deviation of variables in a table. We will explain the meaning of the correlation coefficient r and how to find the equation of the regression line to predict future values. We will conclude with a theoretical analysis of the effect of percentage changes on the mean, standard deviation and regression equation. 📌 Link to the question in the video: https://kibinimatika.org/wp-content/u... 📌For all the solutions to this matriculation exam on the Kibinimatika website: https://kibinimatika.org/bagroot471h2026 💬 Join our community on Discord - for questions, answers and guidance: 🔗   / discord   🌐 Our website:https://kibinimatika.org 🔗 For all our study groups and community: https://kibinimatika.org/groop 📚Our groups on Telegram:https://t.me/ovadgroups 🔥Oved Lev's update channel Ari: https://whatsapp.com/channel/0029VbAD... 🧮Link to playlist:    • 🎓 פתרון בגרות 471 חורף 2026 שאלה 6-חקירת פ...   Like, comment and subscribe to the channel help the content reach more students! Click the bell 🔔 to stay updated on every new video! Time distribution: 00:00 - Presenting the data and the table 02:05 - Calculating the average advertising expenses 02:40 - Calculating the standard deviation of variable x 04:55 - Finding the correlation coefficient r 08:00 - Finding the equation of the regression line 10:47 - Predicting income according to the regression line 11:53 - Conclusions and percentage changes Hashtags: #math_graduation #linear_regression #471 #work_with_Lev_Ari #math #learningmath#high school#students#workwithLevAri