Question

Introduction to Statistics Intervals & Midpoints Name: Score: Instructions: This worksheet will give you an overview of intervals and midpoints. Intervals: Any time we see a regular parenthesis, the mamber next to it does not count in our interval. Any time we sce a square bracket, []), and the number is counted in the interval. On the number line, a parenthesis is an open circle and a square bracket is a closed circle Example: Describe the interval and sketch it on a number line: (2,4). Describe: This interval contains every number between 2 and 4, not including 2 but including 4. 0 1 2 3 4 5 6 1. Describe the interval and sketch it on a number line: (0,3]. Describe: 0 1 2 3 5 6 2. Describe the interval and sketch it on a number line: (1,4). Describes 0 2 4 5 6 3. Describe the interval and sketch it on a number line: 2.6). Describe: 0 2 4 5 6 4. Describe the interval and sketch it on a number line: (0,2.5). Describe + 0 2 3 4 5 6

Answer 1

0 [0,3 0 2 3 4 S [0,3 o and 3 This interval contains This interval contains every number between. including both @[1,4 This internal contains evely numbel between. I and 4 including both. (2,6) 2 3 Y 5 พ 2 3 4 5 6 2 6 6. excluding Both

Standald eslor -] 2.5-1.25 = 1.25 or 125-0 = 1.250 ©, 205] 4 2 253 4 Standal error = 3-1.5= 165 for This inteval contains every number between. o 2.5; including 2.5 but not "o" & Co, 3 [0,3 of 3 midpoint لما ألم = los 2 2 ( 6) = 25 - midpoint sid 2 2.5-1=1.5 [ 1,4 ity standald Error =) 4-205=1.5 100 @ (2,6) midpoint = 8 4. 2+ 6 = Z Z Standal errom. ) 6-4=2100] 4-2=2. ® 0,25) mid point) 0+25= 25 = 1.25 2