Podcast
Questions and Answers
What percentage of students in the English class are not in Augustine, Deacon, or Muluridji?
What percentage of students in the English class are not in Augustine, Deacon, or Muluridji?
What is the overall percentage discount on the guitar?
What is the overall percentage discount on the guitar?
What is the final selling price of the computer after both the increase and decrease?
What is the final selling price of the computer after both the increase and decrease?
What is the original price of the shirt?
What is the original price of the shirt?
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What percentage of people do not like chocolate or strawberry ice-cream?
What percentage of people do not like chocolate or strawberry ice-cream?
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What is the probability that a student selected at random from the class is in Augustine?
What is the probability that a student selected at random from the class is in Augustine?
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What is the overall percentage change in the price of the computer?
What is the overall percentage change in the price of the computer?
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What is the discounted price of the guitar after the first discount?
What is the discounted price of the guitar after the first discount?
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If a store is having a 15% sale, and a shirt originally costs $80, how much will you pay for the shirt after the discount?
If a store is having a 15% sale, and a shirt originally costs $80, how much will you pay for the shirt after the discount?
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A book costs $50, and after a 20% increase, it costs $60. What percentage increase is this?
A book costs $50, and after a 20% increase, it costs $60. What percentage increase is this?
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In a class, 30% of students like football, and 20% like cricket. If 10 students like both, how many students are there in the class?
In a class, 30% of students like football, and 20% like cricket. If 10 students like both, how many students are there in the class?
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A basketball increased in value from $50 to $80 after it had been signed by Patty Mills. What is the percentage increase?
A basketball increased in value from $50 to $80 after it had been signed by Patty Mills. What is the percentage increase?
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At a school, 15% of 120 students were absent. How many students were absent?
At a school, 15% of 120 students were absent. How many students were absent?
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What is the probability that a toddler, selected at random, likes oranges or pears?
What is the probability that a toddler, selected at random, likes oranges or pears?
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A surfboard originally costs $2800, and there is a 20% discount. What is the sale price of the surfboard?
A surfboard originally costs $2800, and there is a 20% discount. What is the sale price of the surfboard?
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If 27 students out of 180 are left-handed, what percentage of students are left-handed?
If 27 students out of 180 are left-handed, what percentage of students are left-handed?
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What is the mode of the number of books read by students?
What is the mode of the number of books read by students?
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If a toddler is selected at random, what is the probability that they like oranges?
If a toddler is selected at random, what is the probability that they like oranges?
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What is the effect of adding a student who has read 31 books to the data set on the mean?
What is the effect of adding a student who has read 31 books to the data set on the mean?
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What is the probability of selecting a green ticket from the box?
What is the probability of selecting a green ticket from the box?
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What is the percentage decrease in the price of the shirt?
What is the percentage decrease in the price of the shirt?
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What is the percentage increase in the population of the town?
What is the percentage increase in the population of the town?
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What will be the new price of the pie after the 6% increase?
What will be the new price of the pie after the 6% increase?
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What is the probability that a person surveyed likes chocolate ice-cream?
What is the probability that a person surveyed likes chocolate ice-cream?
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Study Notes
Probability and Statistics
- To draw a Venn diagram, it's essential to determine the percentage of people who don't like chocolate or strawberry ice-cream.
- The probability of a student selected at random from a class being in McAuley is determined by finding the probability that a student is not in Augustine, Deacon, or Muluridji.
Discounts and Percentages
- If a guitar's original price is $440, and it's discounted by 25%, then further discounted by 10%, the final price and overall percentage discount can be calculated.
- A store raises the price of a computer by 15% and then reduces it by 10% during a sale; the final selling price and overall percentage change in the price can be determined.
- A shirt's original price can be found if it's discounted by 15% and the new price is $41.65.
Data Analysis
- The mean, mode, and median of a dataset can be calculated, and the range and effect of an outlier on these values can be determined.
- The probability of selecting a green ticket from a box of red, black, and green tickets can be calculated.
Percentage Changes
- The percentage decrease in the price of a shirt from $40 to $32 can be calculated.
- The percentage increase in a town's population from 20,000 to 24,000 can be calculated.
- The new price of a pie after a 6% increase from $5 can be calculated.
Surveys and Venn Diagrams
- A survey determines which flavors of ice-cream a shop should sell; 80 people were surveyed, and Venn diagrams can be used to represent the findings.
- The probability of a toddler liking oranges or pears can be calculated from survey data.
Revision Sheet
- Trevor's sports shop has a sale of 20% off surfboards; the discount and new price can be calculated.
- The percentage of left-handed students in a group and the percentage of right-handed students can be calculated.
- The number of absent students if 15% of 120 students are absent can be calculated.
- The increase and percentage increase in the value of a basketball signed by Patty Mills can be calculated.
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Description
Quiz questions on drawing a Venn diagram and calculating percentage of people who don't like certain ice-cream flavors and a separate question on fractions of students in different classes.
