Can you define?
What is Primary Data?
Data collected yourself, such as from a survey.
What is the Mode?
The value that appears the most
A graph can present correlation results is called what?
Scatter graph
Bell shaped curve
Normal distribution
What measures the amount of variation of values from the mean?
Standard deviation
What is secondary data
Secondary research, also known as desk research, is a research method that involves compiling existing data sourced from a variety of channels.
What is the Median?
The middle value when a set of data is arranged in order
What is a one-sample t test?
A one sample t test compares the mean of a single group to a known or a hypothesised population.
In a survey about music, pop music had a total of 7 votes, dance had a total of 9 votes, rock had a total of 3 votes. What is the total number of participants in the survey?
What is 19
Correlation co-effiecient between what two values
-1 to 1
What is Bias?
Encourages a certain response by the wording of a question, or by selecting a specific group to ensure desired outcome.
The number 5 represents what type of measure when the following numbers are used... 6,5,4,7,4,6,3
Median
Skewness
Distribution is asymmetrical with values more spread out on one side of the mean than the other
What is a Sample?
A small selection of a population used when conducting research.
The sum of the values divided by the number of values in a set
The mean
When showing continuous data, as in changing cheeseburger prices, which type of graph would be the most appropriate?
A scatter/line graph
One sample, independent (two sample) and paired (dependant) are types of what?
T-TEST
If P<0.05 what does this mean?
This means the data is statistically significant
A value that a data set tends to be centered around.
Central Tendency - including mean, median and mode
If the numbers 74 and 81 are the two middle values, this number would represent the median
What is 77.5
Paired T test
Used to compare the means of two groups to determine statistical significance.
T-TEST
Fill in the gap...
The states that there is no difference between the means of the groups being compared. If a t-test shows a significant result, we reject this hypothesis.
Null hypothesis