What am I?
Data
SURPRISE!!!
Probability
Vocabulary
100
For this set of data, what does this NUMBER 123 represent? The numbers are: 111, 112, 121, 122, 123, 123, 123, 123, 123
What is median and mode
100
A) collecting data using a survey I created is called a ____________ source.
a primary source.
100
If the sample space is all numbers from 1 to 30. A= multiples of 3, B = multiples of 5. What is P(AnB)?
what is 2/30 or 1/15
100
I have a container with 4 blue, 4 green, and 4 yellow marbles. What is the probability of choosing a green marble?
What is 1/3
100
Create a stem and leaf plot for this data: 3, 3, 7, 24, 2, 16, 12
Is the data positive skewed, negative skewed or symmetrical
What is stem: 0,1,2 leaf: 2337, 246
Positive skew
200
I spun a spinner 40 times. The spinner has 1/8 red, 3/8 purple 1/8 yellow. The last color is blue. What is the fraction of blue?
What is 3/8
200
What type of graph would you use to record the temperature over a week or month?
What is line graph
200
Find n(A)
n(A) = 10
200
State what would happen to each of the mean, median and range of a data set if:
I added 5 to each number in the set?
mean = +5
median = +5
range = remains same
200
Find the median of the data set
Is there a mode for this set of data? Explain. 188, 43, 51, 124, 1
Median = 24
300
I am the difference between two numbers, the highest and lowest. what am I?
What is the range
300
What type of data is a postcode?
What is nominal categorical.
300
Make a set of data with: A mode of 20 A range of 20
What is: 10, 20, 20, 30 (there are more possibilities...)
300
Find Q2 and Q1 for this set of data: 15, 20, 20, 20, 25
Q2 = 20 and Q1 = 17.5
300
Is IQR a good measure of spread? yes/no why?
The IQR is often seen as a better measure of spread than the range as it is not affected by outliers.
400
when your data is organised from least to greatest, I am a number that 25% of the data lies above, what am I ???
What is Q3
400
what type of data is shoe size?
What is discrete numerical
400
a) A coin is tossed 4 times. How many outcomes are there?
b) what is the probability of obtaining at least 1 tail?
a) 24 = 16
b) 1 - P(no heads) = 1 - 1/16
= 15/16
400
Five different data values have a range and median equal to 7 . If two of the values are 3 and 5 , what
is a possible combination of values?
3, 5, 7, 8, 10
400
A survey of 40 sporty people found that 22 liked tennis, 20 liked squash and 13 liked both.
What is P(not liking tennis or squash)
11/40
500
I have a six sided die. On a piece of paper i wrote: A) {1, 2, 3, 4, 5, 6}
What does this statement represent?
What is sample space
500
name 4 types of data
What is numerical: continuous, discrete, categorical: ordinal, nominal
500
How many ways can you arrange 4 people in a line?
4! = 4 x 3 x 2 x 1 = 24
500
This box and whisker plot represents the age of people when they got their first smartphone.
The range is 40.
If 160 people were surveyed. Find the number of people who were less than 30 years old
75% x 160 = 120
500
Describe the non-shaded area in the 2 diagrams
a)
b)
a) A only
b) Not B