{"id":793,"date":"2015-04-26T16:25:40","date_gmt":"2015-04-26T20:25:40","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/?p=793"},"modified":"2015-04-26T10:40:05","modified_gmt":"2015-04-26T14:40:05","slug":"math-7a-lesson-10-4262015","status":"publish","type":"post","link":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/2015\/04\/26\/math-7a-lesson-10-4262015\/","title":{"rendered":"Math 7A, Lesson 10, 4\/26\/2015"},"content":{"rendered":"<p>We study the meaning of probability.<\/p>\n<p>Probability is a branch of mathematics that studies the likelihood, or chance, of a phenomenon happening.<\/p>\n<p>A random experiment is a process in which the result cannot be predicated with certainty. The result is called an outcome of the experiment. An experiment is likely to have more than one possible outcome.<\/p>\n<p>A collection of outcomes is called an event. For example, rolling a dice, you get an odd number.<\/p>\n<p>A measure of how likely an event E will take place is called the probability of that event, and it is denoted by P(E). Mathematically, it is defined as:<\/p>\n<p>The probability of an event E, P(E), in a random experiment with equally likely outcomes is:<\/p>\n<p>P(E) = (number of outcomes favorable to event E) \/ (total number of possible outcomes)<\/p>\n<p>We also distinguish experimental probability from theoretical probability. Experimental probably refers to the probability of an event occurring when an experiment was conducted, as P(E) = (number of times E occurs) \/ (number of trials).<\/p>\n<p>Theoretical probability, or simply \u00a0probability, P(E), is determined by noting all possible outcomes theoretically, and determine how likely the given outcome is for the event E. P(E) = (# of outcomes for event E) \/ (total # of possible outcomes).<\/p>\n<p>Homework:<\/p>\n<p>P58, #7, 8, 9, 10, 1, 14, 15, 16, 21, 23.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We study the meaning of probability. Probability is a branch of mathematics that studies the likelihood, or chance, of a phenomenon happening. A random experiment is a process in which the result cannot be predicated with certainty. The result is called an outcome of the experiment. An experiment is likely to have more than one [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[4,3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/793"}],"collection":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/comments?post=793"}],"version-history":[{"count":3,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/793\/revisions"}],"predecessor-version":[{"id":796,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/793\/revisions\/796"}],"wp:attachment":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/media?parent=793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/categories?post=793"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/tags?post=793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}