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Chapter 1 - Representing Data Flashcards | StudBud
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Chapter 1 - Representing Data
Chapter 1 - Representing Data
24 terms
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StudBud Administration
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Statistics representing data
Flashcards
24 cards
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Questions
24
Answers
1
Empirical Rule question
0.475
0.340
0.950
0.680
2
What is the range of the dot plot?
14
19
20
0
3
When can the empirical rule be used?
For bell shaped data
Only when inside an empire
For all data sets
For skewed data
4
Find Variance of Data Set: 3.1,4.5,7.8
3.88
2.55
4.55
4.33
5
In this box and whisker plot, what is Q3?
70
100
80
90
6
Standard deviation is an example of what?
Measure of dispersion
Measure of central tendency
Order effect
Interval data
7
Calculate the standard deviation of 5,7,12,21,22
8.45
7.00
8.23
9.02
8
According to the Emprical Rule, data within two standard deviations represents how much data?
95%
99.7%
98%
88.9%
9
What is the median of the data: 7,9, 10, 4, 13, 19, 13, 8, 21?
9
19
13
10
10
What is the
MODE
of data set? 2,3,3,4,4,4,5,6
3,4
4
3
6
11
Find the percentile rank of the birth weight of 11 pounds:
17th percentile
83.3%
95th percentile
83rd percentile
12
What is the mean of this set of data?
30.2
30
30.4
29.8
13
What is the mean of a set of data?
The number in the middle of a data set
The spread of the data from smallest to largest
The average
The number occurring most often
14
Stem-and-Leaf Plots
G
H
J
F
15
The Empirical Rule
95%
99.7%
68%
34%
16
Find the Z-score.
2
2.4
2.39
2.14
17
What is the mean of the given set of data....
86.5
85
84.625
89.375
18
In the frequency distribution shown, what is the relative frequency of the first class?
.020
.032
.143
2
19
If someone gets a 97th percentile on a standardized test that means they:
scored worse than 97% of the population
scored approximately average
scored better than 97% of the population
scored 97% of the questions correct
20
Box and Whisker
50%
25%
20% B
17%
21
Range is considered
measure of position
measure of dispersion
a measurement
measure of central tendency
22
Empirical Rule
47.5%
16%
34%
13%
23
Use the z-score formula to solve the following problem:
D. 70.8
C. 67.2
A. 13.2
B. 28.8
24
Which standard deviation is larger?
They are equal
B
A
