Froggy Jumps
Grade 10 4th Quarter
1
Which measure of central tendency is calculated by summing all values in a data set and dividing by the total number of values?
2
What does the symbol ∑ represent in the formula for the mean?
3
In the formula for the mean for ungrouped data, what does the letter "n" represent?
4
To find the median of an ungrouped data set, what is the first step you must take?
5
If a data set has an even number of observations, how is the median determined?
6
Which measure is most affected by extreme values (outliers)?
7
Which measure of central tendency can be used for qualitative (categorical) data, like favorite colors?
8
What is a "bimodal" data set?
9
How is the range of an ungrouped data set calculated?
10
What is the range of the set: 15, 2, 8, 20, 12?
11
In the mean formula for grouped data, what does "f" represent?
12
What is the midpoint(x) in grouped data calculations?
13
In the grouped data median formula, what does LB stand for?
14
What does the symbol cfb represent in the grouped median formula?
15
In the median formula for grouped data, what does "i" represent?
16
Why do we use midpoints to calculate the mean of grouped data?
17
What is the "Median Class" in a grouped frequency distribution?
18
In grouped data, if a class interval is 10–19, what is the midpoint?
19
If the lower boundary is 20.5 and the class interval is 5, what is the upper boundary of that class?
20
In a frequency distribution table, what is "Cumulative Frequency"?
21
If all values in a data set are the same (e.g., 5, 5, 5, 5), what is the range?
22
What happens to the mean if you add 10 to every value in a data set?
23
Which measure is most useful for identifying the most "popular" item in a set?
24
What is the mode of the following data: 2, 5, 5, 8, 10, 12?
25
Find the median of this data set: 3, 11, 7, 5, 21.
26
If the mean of 5 numbers is 10, what is the sum of those 5 numbers?
27
A data set has values 10, 10, 20, 30, 30. This data set is:
28
Which measure is best for "skewed" data, such as household incomes?
29
The sum of deviations of all values from their mean (∑(x-x̄)) is always equal to:
30
Which of the following defines the "Mean" for grouped data?
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