Mean<span>: The average value of the entire set of numbers.
</span>Mode: The number which appears most often in a set of numbers.Median<span>: The middle value between the largest and smallest in a set of numbers. Range: The difference between the largest and smallest in a set of numbers.
Interquartile range: </span><span>a measure of statistical dispersion, being equal to the difference between 75th and 25th percentiles, or between upper and lower quartiles, </span>IQR<span> = Q</span>3<span> − Q</span>1<span>.</span>
Answer:
Step-by-step explanation:
<u>Let the cost of a sheet be s and cost of a blanket be b</u>
<u>From the first equation we get:</u>
<u>Substitute in the second equation</u>
- s + 4*(41 - 2s) = 80
- s + 164 - 8s = 80
- 7s = 84
- s = 12
<u>Then</u>
Answer:
Set the product of 7 and 8 equal to the product of 24 and x, and then solve for x
Step-by-step explanation:
7/8 = 3/24
Answer:
b
Step-by-step explanation:
This is an arithmetic series, where S5 means the sum of the first 5 numbers in the series. The general formula is:
Sn = (n/2)(a1 + an)
So,
a1 = 1 + 5/2(1) = 3.5
a5 = 1 + 5/2(5) = 1.5
S5 = (5/2)(3.5+1.5)
S5 = 12.5
<em>The answer should be 12.5</em>