Understand Probability as Number 0-1 - 7th Grade Math
Card 1 of 25
Choose the word that best describes $P(E)=0.98$: likely, unlikely, or neither.
Choose the word that best describes $P(E)=0.98$: likely, unlikely, or neither.
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Likely. Very high probability indicates almost certain occurrence.
Likely. Very high probability indicates almost certain occurrence.
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What is the valid range of any probability value $P(E)$?
What is the valid range of any probability value $P(E)$?
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$0 \le P(E) \le 1$. Probabilities must be between 0 (impossible) and 1 (certain).
$0 \le P(E) \le 1$. Probabilities must be between 0 (impossible) and 1 (certain).
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What does a probability of $1$ mean about an event?
What does a probability of $1$ mean about an event?
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The event is certain. Probability of 1 means the event will definitely happen.
The event is certain. Probability of 1 means the event will definitely happen.
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What does a probability near $0$ indicate about an event's likelihood?
What does a probability near $0$ indicate about an event's likelihood?
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The event is unlikely. Values close to 0 indicate low chance of occurrence.
The event is unlikely. Values close to 0 indicate low chance of occurrence.
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What does a probability near $1$ indicate about an event's likelihood?
What does a probability near $1$ indicate about an event's likelihood?
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The event is likely. Values close to 1 indicate high chance of occurrence.
The event is likely. Values close to 1 indicate high chance of occurrence.
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Which is more likely: an event with probability $0.7$ or $0.4$?
Which is more likely: an event with probability $0.7$ or $0.4$?
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$0.7$ is more likely. Higher probability values indicate greater likelihood.
$0.7$ is more likely. Higher probability values indicate greater likelihood.
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Which is less likely: an event with probability $0.15$ or $0.25$?
Which is less likely: an event with probability $0.15$ or $0.25$?
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$0.15$ is less likely. Lower probability values indicate lesser likelihood.
$0.15$ is less likely. Lower probability values indicate lesser likelihood.
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Identify the probability value that is impossible: $-0.2$, $0.2$, or $1$.
Identify the probability value that is impossible: $-0.2$, $0.2$, or $1$.
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$-0.2$. Negative probabilities violate the rule $P(E) geq 0$.
$-0.2$. Negative probabilities violate the rule $P(E) geq 0$.
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Identify the probability value that is impossible: $0$, $1.3$, or $0.9$.
Identify the probability value that is impossible: $0$, $1.3$, or $0.9$.
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$1.3$. Values greater than 1 violate the rule $P(E) leq 1$.
$1.3$. Values greater than 1 violate the rule $P(E) leq 1$.
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Choose the word that best describes $P(E)=0.02$: likely, unlikely, or neither.
Choose the word that best describes $P(E)=0.02$: likely, unlikely, or neither.
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Unlikely. Very small probability indicates rare occurrence.
Unlikely. Very small probability indicates rare occurrence.
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Identify the probability that represents an impossible event: $0$, $\frac{1}{2}$, or $1$.
Identify the probability that represents an impossible event: $0$, $\frac{1}{2}$, or $1$.
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$0$. Probability of 0 means cannot happen.
$0$. Probability of 0 means cannot happen.
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Identify the probability that represents a certain event: $0$, $\frac{1}{2}$, or $1$.
Identify the probability that represents a certain event: $0$, $\frac{1}{2}$, or $1$.
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$1$. Probability of 1 means guaranteed to happen.
$1$. Probability of 1 means guaranteed to happen.
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Which event is more likely if $P(A)=0.6$ and $P(B)=0.55$?
Which event is more likely if $P(A)=0.6$ and $P(B)=0.55$?
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Event $A$. Compare values: $0.6 > 0.55$, so A is more likely.
Event $A$. Compare values: $0.6 > 0.55$, so A is more likely.
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What inequality correctly orders these probabilities from least to greatest: $0.3$, $0.03$, $0.9$?
What inequality correctly orders these probabilities from least to greatest: $0.3$, $0.03$, $0.9$?
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$0.03 < 0.3 < 0.9$. Decimal comparison: $0.03$ is smallest, $0.9$ is largest.
$0.03 < 0.3 < 0.9$. Decimal comparison: $0.03$ is smallest, $0.9$ is largest.
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Which probability best matches a very likely event: $0.99$, $0.52$, or $0.20$?
Which probability best matches a very likely event: $0.99$, $0.52$, or $0.20$?
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$0.99$. Highest value indicates most likely to occur.
$0.99$. Highest value indicates most likely to occur.
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Which probability best matches a very unlikely event: $0.01$, $0.45$, or $0.80$?
Which probability best matches a very unlikely event: $0.01$, $0.45$, or $0.80$?
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$0.01$. Smallest value indicates least likely to occur.
$0.01$. Smallest value indicates least likely to occur.
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Which probability is closest to an equally likely event: $0.49$, $0.10$, or $0.90$?
Which probability is closest to an equally likely event: $0.49$, $0.10$, or $0.90$?
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$0.49$. Closest to $0.5$, which represents equal likelihood.
$0.49$. Closest to $0.5$, which represents equal likelihood.
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Choose the word that best describes $P(E)=0.50$: likely, unlikely, or neither.
Choose the word that best describes $P(E)=0.50$: likely, unlikely, or neither.
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Neither likely nor unlikely. Exactly $ rac{1}{2}$ means equal chances either way.
Neither likely nor unlikely. Exactly $ rac{1}{2}$ means equal chances either way.
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What does a probability around $\frac{1}{2}$ indicate about an event's likelihood?
What does a probability around $\frac{1}{2}$ indicate about an event's likelihood?
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The event is neither likely nor unlikely. Equal chance of happening or not happening.
The event is neither likely nor unlikely. Equal chance of happening or not happening.
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What does a probability of $0$ mean for an event?
What does a probability of $0$ mean for an event?
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Impossible event. The event cannot happen under any circumstances.
Impossible event. The event cannot happen under any circumstances.
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Identify whether $P(E)=1.05$ is a valid probability value.
Identify whether $P(E)=1.05$ is a valid probability value.
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Invalid. Probabilities cannot exceed 1.
Invalid. Probabilities cannot exceed 1.
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What does a probability near $1$ indicate about an event’s likelihood?
What does a probability near $1$ indicate about an event’s likelihood?
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Likely. Values close to 1 mean the event usually happens.
Likely. Values close to 1 mean the event usually happens.
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Find the best description of $P(E)=\frac{1}{2}$: unlikely, equally likely, or likely.
Find the best description of $P(E)=\frac{1}{2}$: unlikely, equally likely, or likely.
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Equally likely. $P = \frac{1}{2}$ means 50-50 chance.
Equally likely. $P = \frac{1}{2}$ means 50-50 chance.
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Identify whether $P(E)=-0.2$ is a valid probability value.
Identify whether $P(E)=-0.2$ is a valid probability value.
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Invalid. Probabilities cannot be negative.
Invalid. Probabilities cannot be negative.
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Choose the word that best describes an event with probability $0.02$.
Choose the word that best describes an event with probability $0.02$.
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Unlikely. Very close to 0 indicates an unlikely event.
Unlikely. Very close to 0 indicates an unlikely event.
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