Working with Variables There are a couple of simple steps for creating and using variables:
Declare: Tell the program that we’re going to make a new variable and give it a useful name. This only happens the first time we make a variable.
Assign: Give the variable a value. We can assign new values to a variable whenever we want.
Let’s create a variable to store the temperature in Fahrenheit:
1. Declare
2. Assign

Asmall internet mail-order company keeps track of the number of orders it fills per day for many years and determines that the distribution of the variable "orders filled per day" is right-skewed and has the following five-number summary: minimum = 20 q1 = 32 median = 46 q3 = 63 maximum = 80 suppose we take random samples of size 40 from this distribution and calculate the range for each of our samples. (i cant put in the graph, but its approximately normal with center between 56 and 57, with a range of 53 to 60). a) there are two dots on the graph at 53. explain what these values represent. b) is the sample range an unbiased estimator of the population? use the dotplot above to justify your answer.

Ryan, jessica, and mark each solved this system of equations. all of their answers are different. find and explain the mistakes. what is the correct answer? y = 3x + 2 6x – 2y = 10

William poole believes economics should be taught in schools because students will learn