Consider the following equation in standard form: x2 25 + y2 9 = 1.The value of a2 is ______________ , so the x-intercepts are ______________ and ______________ . The graph passesthrough______________ and ______________ , which are the vertices. The value of b2 is ______________ , so the y-intercepts are ______________ and ______________ . The graph passes through______________ and ______________ .

Ch. 3 ➔ Appropriate measures depend on the shape ◆ Symmetric: mean and standard deviation ◆ Skewed: median and interquartile range ➔ The mean: The average ◆ Literally the balancing point ◆ For a symmetric distribution, the mean is at the center and close to typical values ◆ Also balances skewed graphs ● Doesn’t tell us the typical value ● Right skewed, the average is to the right of the typical values and vice versa ➔ Standard Deviation: number that measures how far away a typical observation is from the me