lanakay2006
01.03.2021 •
Mathematics
This box plot shows information about the marks scored in a test.
a) What was the median number of marks scored?
b) What was the interquartile range of the marks?
c) What was the range of the marks?
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Ответ:
a) 58
b) 38
c) 76
Step-by-step explanation:
a) Here we want to get the median
The median of the number is the 3rd line
The value here is 58
b) The interquartile range is the difference between the first and third quartile
The third quartile is the 4th line and its value is 72
The first quartile is the second line which is 34
The interquartile range is thus; Q3-Q1
= 72-34 = 38
c) The range is the difference between the highest and lowest values
The highest value is 86
The lowest value is 10
The range is thus;
86-10 = 76
Ответ:
Explanation:
As you can see in the graph that the graph intersects the x-axis at 3 points which are:
x = 1;
x = 3;
x = 5.
So the correct polynomial product is:
(x-1)(x-3)(x-5)
Because if we put them equals to zero we would get:
x-1=0
=> x=1
x-3 = 0
=> x = 3
x-5 = 0
=> x = 5(same as stated above)
Hence the correct option is (A) (x-1)(x-3)(x-5)