Probability
What is Probability?
How likely an event is to occur/How likely something is to happen
List the three main measures of central tendency.
Mean, mode and median
What is a frequency table?
A table that shows the list of values and the number of times they occur in a data set.
What is the probability of a person walking on the sun?
0 or Impossible
What is another name for the second quartile or Q2?
The median
How do we identify the probability of an event occuring?
Favourable outcomes/Total outcomes
What does the mode represent?
The value/s that occurs the most in a dataset.
List 3 class features.
Class limit, class boundary, midpoint, boundaries
What is the probability of a person waking up each morning?
1/2 or equally likely
Q1 and Q3 is also known as what?
q1 = lower quartile
q3=upper quartile
Theoretical probability is calculated. True or false?
True
What does the mean represent?
The sum of all values in the dataset divided by the number of values in the dataset.
What is the formula for finding the mean from an ungrouped frequency table?
(The sum of all the values multiplied by their respective frequency) divided by (the total frequency)
How likely is it that a die has 6 faces?
1 or certain
How do we find the semi-interquartile range?
q3 minus q1 divided by 2
Define 'Sample space'.
The total number of outcomes
What does the median represent?
The middle number in a data set after the values have been arranged in ascending order.
Explain how to find the class limit.
Find the difference between the upper and lower boundary.
12/21
13, 3, 2, 56, 2, 0, 8, 7, 60. Find q2 and the semi-interquartile range.
q2= 2
Semi-interquartile range= 2.5
Alex, Peter, Kayla and Rich are candidates for class president and vice president for grade 10. How many ways can class president and vice president be chosen?
12
These values represent the ages of students in Ava's class: 8,7,6,7,8,8,7. What is the mode and mean age?
Mode=7 and 8
Mean=7.29 or 7
List the features of a Histogram.
Bars that are not separated, x and y axis, title and frequency
A coin is tossed 10 times. Head appeared 6 times and tails appeared 4 times. What is the experimental probability of getting a head?
6/10=3/5
5, 7, 8, 8, 9, 4. Identify the median and interquartile range of the data set.
median= 8
Interquartile range=2