
Stats revision HL
Authored by Anna Baker
Mathematics
10th - 12th Grade
Used 3+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stratified sampling is:
Each member of the population having equal chance of being selected e.g. random number generator
Arranging the population in order and picking every kth member
Taking members from different groups of the population in proportion (relative the population).
The first/easiest members of the population are used.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pick the best answer
Standard deviation is:
Spread
Variation in a data set
A measure of on average, how far a set of data is from the mean
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When is a value in a data set an outlier?
2 x IQR above and below the quartiles
1.5 x IQR above and below the quartiles
1 x IQR above and below the quartiles
2.5 x IQR above and below the quartiles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a probability distribution function the probabilities of the outcomes sum to
0
0.5
1
5.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Find the value of k
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Is this a probability distribution function?
Yes
No
7.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Calculate E(X). Give your answer as a fraction.
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