The mean is the measure of central tendency most likely to be affected by an outlier. |
true |
Some quantitative data sets do not have medians. |
false- ALL quantitative data... |
A data set can have the same mean, median, and mode. |
true |
When each data class has the same frequency, the distribution is symmetric. |
false- ...the distribution is UNIFORM. |
The mean and median of a data set are both fractiles. |
false- the mean may not always be |
About one quarter of a data set falls below Q1. |
true |
The second quartile is the median of an ordered data set. |
true |
The 50th percentile is equivalent to Q1. |
false- Q2 |
The unit of measure for the standard score is always standard deviation. |
true |
For a symmetric distribution, the standard deviation and mean are equal. |
false- MEDIAN and mean are equal. |
In a box and whisker display, the length of the box is the same as the range. |
false- ...same as the interquartile range. (IQR) |
The measures of position are range, variance, standard deviation and standard score. |
false- the measures of position are the 5 number summary and standard score. |