Answer:
<h2>B. 7.1</h2>
Step-by-step explanation:
Given the sample data 2 6 15 9 11 22 1 4 8 19, before we can get the standard deviation, we need to first calculate the mean.
mean = 2 +6 +15 +9 +11 +22 +1 +4 +8 +19/10
mean = 97/10
mean = 9.7
Standard deviation for ungrouped data is expressed using the formula;



<em>Hence the standard deviation of the sample data is 7.1</em>
Slope : y2 - y1 / x2 - x1
( 2 , 6 ) (7 , 0)
0 - 6 / 7 - 2
- 6 / 5 is the slope
Answer: 24$
Step-by-step explanation:
24 is the smallest common factor between 6 and 8. So to get 24 you would simply multiply 6 by 4 and 8 by 3. So Jodie bought 4 shirts while Marge bought 3.
Answer:
Step-by-step explanation:
Given that 97 cities were surveyed to determine sports teams. 25 had soccer, 24 had rugy, 21 had basketball, 12 had soccer and rugby, 11 had soccer and basketball, 12 had rugby and basketball, and 5 had all three.
a) Only rugy team =5
b) Soccer and rugby but not basket ball = 7(green shaded in the diagram)
c) Soccer or rugy = 25+24-12= 37
d) soccer or rugby, but not basketball=37-(6+5+7) = 19
e) Exactly two teams = 7=7+6 = 20
f) Atleast two teams = 7+5+6+7 =25
g) Atleast one team = Total - no team = 40
h) No teams = 91-40 = 51