Solve the system of linear equations -x+4y=-8 -1/4x+y=-1
1 answer:
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Answer:
c. Three fourths of the data is greater than 65.
Step-by-step explanation:
- A. is right, half of the data does lie between 53 and 74.
- B. is right, when calculated, the range is 57.
- C. is wrong.
- D. is right, the median of the lower half of the data is 53.
- I've attached a helpful image of box-and-whisker plots!
Answer:
(A) The data set of the sample of students who has taken a calculus test is right skewed.
(B) The average of female students in the class is 66.
Step-by-step explanation:
(A)
For a left skewed distribution the Mean < Median < Mode.
For a right skewed distribution the Mean > Median > Mode.
For a symmetric distribution the Mean = Median = Mode.
Given: Mean = 78.2, Median = 67 and Mode = 67
In this case the mean of the data is more than the median and mode.
Thus, the data set of the sample of students who has taken a calculus test is right skewed.
(B)
Total number of student () = 35
Combined average () = 70
Number of male student () = 20
Average of male students () = 73
Number of female student () = 15
Average of female students =
The formula to compute the combined average is:
Compute the value of as follows:
Thus, the average of female students in the class is 66.