All Tasks
Interquartile range
Consider this sample:
$${45,47,49,50,52,55,57,60,63,65}$$
Now, find the interquartile range.
# Mean & median
Training
6
Negative Powers
This it's a multiple choise question.
Consider the power: $5^{-2}\;+\;7^{-3}$ . This Power can be represented in other way.
Choose the correct aswer.
# Powers
Training
8
Bad Students
Investigators did a test to find out the absolute frequency of how many students missed school in a week. There are 230 students.
Number of days: $${Day 1...Day 7}$$
Absolute frequency: $${0,6,7,4,1,3,2}$$
What is the relative frequency?
Please round to three decimal digits here.
# Absolute & relative frequency
Training
5
Natural Logarithm
Fill in the blank spots.
# Exponential properties
Learning
11
Exponential Function
The function $y=3^x$ is given. For what $x$ has the function the values $0.4$ and $1.4$?
Round to three decimal places.
# Exponential function
Training
11
Median of heights
Some students in a class measured their heights as displayed:
$${155,157,162,164,166,177,177}$$
What is the median?
# Probability
Learning
5