Statistics and probability

Front

How many people were surveyed in the sample about internet browsing devices?

Back

57

Front

The frequency table shows the number of cars owned by different families. Calculate the median.

Back

1

Front

Interquartile range of petunia seedlings' heights from a box plot.

Back

8

Front

The average height h of grass t days after being mowed, is shown in the table. Calculate the correlation coefficient r.

Back

0.993

Front

Back

0

Front

Back

0.422

Front

If 3 coins are tossed simultaneously, find the probability of getting exactly two tails.

Back

Front

One ball is drawn from each of the boxes shown. Find the probability that at most one blue ball is drawn.

Back

Front

If the correlation coefficient r = 0.98 then it refers to a ... correlation

Back

very strong

Front

The table shows the distribution of marks obtained on a test. Find the standard deviation of the test scores.

Back

1.5