Term
| a situation in which conclusions reached from combined cross tabulations are reversed when using the uncombined cross tabulations is known as... |
|
Definition
|
|
Term
| A number that describes a sample, such as sample means, is known as a... |
|
Definition
|
|
Term
Number of Hours Frequency
0-9 20
10-19 80
20-29 200
30-39 100
what is the relative frequency of students working 9 hours or less? |
|
Definition
|
|
Term
| the measure of location which is the most likely to be influenced by extremely large values in the data set is the... |
|
Definition
|
|
Term
the correlation coefficient for two variable x and y is Rxy = .88.
The relationship between x and y is... |
|
Definition
|
|
Term
Sample Data: 7 6 9 20 3 13 14
The median is... |
|
Definition
|
|
Term
Sample Data: 7 6 9 20 3 13 14
The 3rd quartile is... |
|
Definition
|
|
Term
Sample Data: 7 6 9 20 3 13 14
The range of the data is... |
|
Definition
|
|
Term
| a normal distribution with a mean of 0 and a standard deviation of 1 is called... |
|
Definition
| a standard normal distribution |
|
|
Term
| a histogram is said to be left skewed if it... |
|
Definition
| has a longer tail to the left |
|
|
Term
sample data: 4 8 6
sample mean is... |
|
Definition
|
|
Term
sample data: 4 8 6
the standard deviation is... |
|
Definition
|
|
Term
the covariance for two variables x and y is S(xy) = 3.13.
The standard deviation for x is 2.5, and the standard deviation for y is 1.86. The correlation coefficient is... |
|
Definition
|
|
Term
x f(x) number of electrical
0 .80 outages (x)
1 .15
2 .04
3 .01 |
|
Definition
|
|
Term
x f(x) number of electrical
0 .80 outages (x)
1 .15
2 .04
3 .01
the probability that there are 2 or more electrical outages is... |
|
Definition
|
|
Term
| the mean for the number of electrical outages is... |
|
Definition
|
|
Term
| Z is a standard normal random variable. The P(-1.20 |
|
Definition
|
|
Term
|
Definition
| process of using data collecting on a sample to draw conclusions about a population |
|
|
Term
| 500 registered voters in a city are polled to obtain info on whether they will vote for candidate A in an upcoming election. The population for this study is... |
|
Definition
| the registered voters who live in the city |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
