Step-by-step explanation:
Let the digit at tens place of a two digits number be X
The place value of X = 10×X = 10X
The units digit = 5 more than its tens digit
= X+5
The place value of units digit
= (X+5)×1
= X+5
Now
The two digits number
= 10X+X+5
⇛ 11X+5
Therefore ,The two digits number = 11X+5.
Remaining shirts to be ironed = 1 - 1/4 = 3/4
Fraction of shirts Lenox will iron each day = (3/4)/5 = 3/20
No of shirts to be ironed on thursday and friday = 2(3/20 x 40) = 3 x 6 = 18.
The median for a set of numbers would be the one that appears closest to the middle of the set.
For the set 4, 8, 10, 5, 9, in order to find the median, we must first sort them numerically.
4, 5, 8, 9, 10
Now, which of these 5 numbers is the closest to the middle?
The answer to that would be 8, since it is actually the number in the middle.
The median number for the numbers 4, 8, 10, 5, 9 is 8.
Hope that helped =)
Answer:
Let's assume the following data:
Price in Dollars (X) 26 29 32 38 47
Number of Bids (Y) 12 13 15 16 18
For our case we have this:
n=10
So then the correlation coefficient would be r =0.974
Step-by-step explanation:
Previous concepts
The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.
Solution to the problem
And in order to calculate the correlation coefficient we can use this formula:
Let's assume the following data
Price in Dollars (X) 26 29 32 38 47
Number of Bids (Y) 12 13 15 16 18
For our case we have this:
n=10
So then the correlation coefficient would be r =0.974