Answer:70
Step-by-step explanation:82+82+82+70=316/4=70
To find the average of multiple number you have to add up all of the numbers and then divide by the amount of numbers (in this case 4). You could easily do this by guess&check in a calculator.
Answer:
25% change
Step-by-step explanation:
(15 - 12) / 12 = 3/12 = 1/4 = 0.25
Answer:
This distribution should be expected to be right skewed.
Step-by-step explanation:
Pearson skewness:
The skewness of a data set is given by the subtraction of the mean by the mode, divided by the standard deviation.
If the coefficient is positive, the distribution is right skewed.
If the coefficient is negative, the distribution is left skewed.
If the coefficient is sufficiently close to 0(+/- 0.05), the distribution is bell shaped.
In this question:
Mean 7.4, mode 4, standard deviation 11
(7.4-4)/11 = 3.4/11 = 0.31
Positive coefficient, so right skewed.
Answer:
30 times
Step-by-step explanation:
Jeanna : Haylee = 2 : 5
The number of times Haylee babysits in one month is unknown, so it is represented as x.
Write a new ratio to represent the scenario
2 : 5 = 12 : x
Ratios can be written as fractions
Rewrite
2/5 = 12/x
Cross multiply (numerator * denominator / numerator * denominator)
2x = 60
x = 30
Haylee babysat 30 times that month
Hope this helps :)
<em>Greetings from Brasil...</em>
Here, just apply the Metric Relationships to the Rectangle Triangle
AB² = BC · BD
10² = 16 · X
16X = 100
X = 100/16
<em>simplify</em>
100 ÷ 4 = 25
16 ÷ 4 = 4
X = 25/4
<h3>X = 6.25</h3>