{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/e76402b308c245eca7e4873f939b2f5f\" frameborder=\"0\" width=\"1838\" height=\"1378\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":1378,"width":1838,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":1378,"thumbnail_width":1838,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/e76402b308c245eca7e4873f939b2f5f-5385ec8a97b3a1d0.gif","duration":3357.1,"title":"23H Grade 3 Data","description":"This Loom reviews Grade 3 Higher Calculator-style questions, focusing on probability, Venn diagrams, and grouped-data graphs. It demonstrates checking that probabilities add to 1 to find expected counts, using a spinner biased dice example rolled 200 times to get 98 for rolling a 1 or 3, and interpreting union and intersect in Venn diagrams to compute probabilities such as 7 out of 15 and 1 out of 12. It also covers finding the median using cumulative frequency (for example dividing 80 by 2 to locate the 40th value) and drawing frequency polygons with midpoints rather than endpoints. The later sections address common graphing issues such as incorrect lines of best fit, scale mistakes, and outliers, along with example scatter diagram correlations and correlation effects. "}