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Skitter Scatter plots
PO PER REE
100
ID the population and sample. Surveyors in a mall choose shoppers to ask about product preferences.
What is pop = all shoppers in the mall; sample = people who are polled
100
This graph is another way to desplay data, where the values are grouped so that all but the last digit is the same in each category.
What is a stem and left plot
100
This graph is a good way to display data that can be grouped in categories
What is a bar graph
100
This describes the type of relationship between two data sets.
What is correlation
100
This is a shortened way to write really long obnoxious numbers.
What is scientific notation
200
What's the sampling method? A hish school ramdomly chooses three classes from each grade and then draws three random names from each class to poll about lunch menus.
What is stratified
200
This kind of graph is used to compare 2 sets of data. It might seem like things are a little backward.
What is a back to back stem and leaf plot.
200
This is a type of bar graph with intervals in which the data are grouped.
What is a histogram
200
This is the line that comes closest to all of the points on a scatter plot.
What is line of best fit.
200
Write 0.00709 in scientific notation
What is 7.09 x 10 to the -3rd
300
ID the population and sample. Give a reason why the sample could be biased. A high school principal asks the first three people who leave the school play whether they liked it.
What is pop = people who attended the play; sample = the first three people; possible bias = they may have left early bc they didn't like it.
300
This "thing" can have a strong effect on the mean of a data set.
What is an outlier
300
This kind of graph shows a change over time, like the kind your doctor fills out when you visit
What is a line graph
300
Does the data set have a positive, negative or no correlation? the size of a jar of baby food and the number of jars a baby will eat
What is negative correlation
300
This is a letter that represents a value that can change or vary.
What is a variable.
400
What sample method is used? Every firth name is called from a list of voters.
What is systematic
400
This describes how spread out the data is.
What is variability
400
Name 3 reasons that graphs can be misleading.
What is does not start at zero, art can distort data, intervals may not be equal, different sizes, no scale
400
Does the data set have a positive, negative or no correlation. The number of weeks a film has been out and total attendance.
What is positive.
400
This is the name for the number that is stuck with the variable.
What is a coefficient.
500
ID the pop and sample and give a reason why it could be biased. A biologist studying trees samples blossoms of trees along the river.
What is pop = trees; samples = trees along the river; poss bias = the trees samples have a better source of water than the others.
500
This divides a data set into four equal parts
What is a quartile
500
Why is this statistic misleading. A budget area of a used car lot has five cars on it, with prices of $4200, $4700, $4900, $5200 and $900 (a wrecked one). The car ad in the local paper reads "Average priced car on budget lot is $3980."
What is the price of the wrecked car skews the data.
500
What is the difference between a line graph and a scatter plot?
What is in a line graph all of the points are connected. In a scatter plot, the line of best fit does not necessarily pass through all or any of the points.
500
Why can't you find a numerical value for the expression 4x - 5y, for x = 3.
What is the y value is not given.