Calculating Averages
ISEE Middle Level · Flashcards · Recall
ISEE MIDDLE LEVEL · FLASHCARDS
Card 1
of 3
0 got it
0 to review
Current
Got it
Still learning
Not seen
QUESTION
State the formula for the arithmetic mean of
n
n
n
numbers
x
1
,
x
2
,
…
,
x
n
x_1, x_2, \dots, x_n
x
1
,
x
2
,
…
,
x
n
.
QUESTION
State the formula for a weighted mean with values
x
i
x_i
x
i
and weights
w
i
w_i
w
i
.
QUESTION
State the mean of two numbers
a
a
a
and
b
b
b
using a formula.
Tap to flip before you grade
ANSWER
a
+
b
2
\frac{a+b}{2}
2
a
+
b
. The mean of two numbers is their sum divided by
2
2
2
.
Swipe → got it · swipe ← still learning
Got it
Still learning
Flip Card
Previous card
Next card