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Statistics
Statistics
20 terms
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20 cards
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Questions
20
Answers
1
What does the slope in a linear question represent?
The intercept
The rate of change
The variance
The starting value
2
What is a frequency distribution?
A calculation of probability
A line graph
A chart showing how often each value occurs
The amount of money someone earns
3
What is the range of the data set: 2, 5, 9, 12, 14?
14
5
12
10
4
Which of the following is a sample?
The average height of basketball players
A group of 100 students selected from a school
All students in a school district
The most common eye color
5
What does standard deviation measure?
mean of sample
The amount of variation or spread
Size of population
The center data
6
If a line has a slope of 3 and y-intercept of 2, what is the equation?
y = -2x + 5
4x+1
y = 3x + 2
y = 3x - 2
7
If a deck has 52 cards, what is the probability of drawing a heart?
1/13
1/3
1/2
1/4
8
Which is the equation of a straight line?
y = mx + b
x=y
SD = √x
P(A and B) = P(A) × P(B)
9
What is a population in statistics?
A numerical summary
A small group of data
All members of a group being studied
A random sample
10
If the standard deviation is 5, what is the variance?
10
2.5
25
5
11
What is the probability of flipping a fair coin and getting heads?
1
0.25
0.75
0.5
12
What is the correlation between two variables?
The sum of the variables
How many data points are in the set
The strength of linear relationship
The measure of spread
13
What is the term of the value that appears most often in a data set?
Mean
Range
Median
Mode
14
What is probability?
The size of a sample
The likelihood of an event occurring
The difference between mean and median
A number that is always greater than 1
15
Which formula is used to calculate the mean?
√(Σ(x - μ)² / N)
Max - Min
(Sum of values) / (Number of values)
Mode ÷ Frequency
16
What is the frequency of value 3?
0.625
0.25
0.75
0.5
17
Which of the following formulas represents variance?
Σ x / N
√(Σ(x - μ)² / N)
Σ(x - μ)² / N
|x - μ| / σ
18
What is an outlier?
A value that is significantly different from the rest
The median
A value that occurs more than others
A value close to the mean
19
If the five numbers are 4, 6, 8, 10, and 12, what is the mean?
10
7
6
8
20
Which of the following is a random event?
Rolling a 6 on a die
Deciding to walk or drive
Selecting the tallest student
Choosing your favorite color
