Answer:
3
Step-by-step explanation:
Standard derivation is how much the data varies from the mean
class 2 has a lower derivation, the scores vary less from the mean, being closer
Input m = -4 n = 2 and p = 1.5 into the expression above
7m + 2n - 8p/n
= 7(-4) + 2(2) - 8(1.5)/2
= -28 + 4 - 6
= -30
Answer:
median = 2.8 m
Step-by-step explanation:
the median is the middle value of the data set in ascending order.
If there is no exact middle value then it is the average of the values either side of the middle.
the stem- leaf diagram shows the data in ascending order from 1.6 to 4.5
there are 10 data values so no exact middle value.
the median lies between 2.7 and 2.9
median = (2.7 + 2.9) ÷ 2 = 5.6 ÷ 2 = 2.8 m
Answer:
399 children, 33 adults
Step-by-step explanation:
Children = c
Adults = a
c + a = 432
a = 432 - c
1.5c + 2a = 664.50
1.5c + 864 - 2c = 664.50
-.5c + 864 = 664.50
-.5c = -199.5
.5c = 199.5
c = 399
432 - 399 = 33
a = 33
