
Probability and Variance Concepts
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Mia Campbell
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is variance primarily a measure of?
Correlation
Probability
Spread
Central tendency
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which symbol is used to denote the sum in the variance formula?
Delta
Mu
Pi
Sigma
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the z-score represent in relation to variance?
The deviation from the mean
The average score
The probability of a score
The sum of all scores
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example of the game, what are the two possible scores?
5 and 15
10 and 20
15 and 25
20 and 30
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the probability of scoring 10 points in the game example?
0.2
0.4
0.8
0.6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the mean calculated in the probability distribution example?
By finding the median score
By dividing the total score by the number of scores
By multiplying scores by their probabilities and summing
By adding all scores
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expected value or mean of the scores in the game example?
14
17
15
16
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