the sum of the hieghts of all the students in Mrs.Maloneys class is 1,472 in. The mean height is 5ft 4in how many students are in the class? (1ft = 12in)
1472 / 64 = ?
so if the answer is 23 students would the answer to this
the median height is 5ft 2in how many students in mrs. maloneys class are 5ft 2in or taller? worked the same way the answer would be 23 also?
the answer is 23 students
The median height is the height right in the middle. Half of the students are shorter than 5 ft., 2 in. Half are taller than that.
23/2 = 11.5
So 11 are shorter, 11 are taller, and one student is exactly 5 ft. 2 in.
To find the number of students in Mrs. Maloney's class, we need to use the given information about the sum of the heights and the mean height.
Let's first convert the mean height to inches to have a consistent unit of measurement:
5ft 4in = (5 * 12) + 4 = 60 + 4 = 64 inches
Now, we can use the formula for the mean (average):
Mean = Sum of all values / Number of values
In this case, the mean height is 64 inches, and the sum of the heights is 1,472 inches. Let's denote the number of students as "n".
Therefore, we can set up the equation:
64 = 1472 / n
To solve for "n," we can multiply both sides of the equation by "n":
64 * n = 1472
Dividing both sides by 64:
n = 1472 / 64
Calculating this:
n = 23
So, there are 23 students in Mrs. Maloney's class.