def basic(request):
"Calculates and displays some basic statistics."
context = {}
# Number of users
num_users = stats.count_active_users()
context["num_users"] = num_users
# Number of questions answered
num_responses = models.MultipleChoiceResponse.objects.count()
context["num_responses"] = num_responses
context["responses_per_user"] = num_responses / float(num_users)
num_tests = models.TestSet.objects.exclude(end_time=None).count()
context["num_tests"] = num_tests
(context["mean_tbt"], context["std_tbt"]) = basic_stats(stats.get_time_between_tests())
context["log_start_time"] = models.TestSet.objects.order_by("start_time")[0].start_time
context["log_end_time"] = models.TestSet.objects.order_by("-start_time")[0].start_time
context["tests_per_user"] = num_tests / float(num_users)
context["responses_per_test"] = num_responses / float(num_tests)
all_responses = models.MultipleChoiceResponse.objects
context["mean_score"] = all_responses.filter(option__is_correct=True).count() / float(all_responses.count())
test_stats = stats.get_test_size_stats()
pretty_results = [(k, 100 * t, 100 * c) for (k, t, c) in test_stats]
context["test_dist"] = pretty_results
context["time_used_mean"], context["time_used_std"] = stats.get_mean_time_used()
return render_to_response("analysis/basic.html", context, RequestContext(request))
def _build_time_graph(name):
if name == "betweentests":
data = stats.get_time_between_tests()
hist_data = stats.log_histogram(data, start=1.0 / (24 * 60))
chart = charts.LineChart(hist_data, data_name="histogram")
chart.add_data("raw", [(x,) for x in data])
return chart
elif name == "sessions":
data = stats.get_mean_score_over_sessions()
approx_data = stats.approximate(data, n_points=12)
chart = charts.MultiLineChart(approx_data, y_axis=(0.0, 1, 0.1), x_axis=(0, 1, 0.1), data_name="approximate")
chart.add_data("raw", data)
two_colours = charts.color_desc(2).split(",")
three_colours = ",".join((two_colours[0], two_colours[1], two_colours[1]))
chart["chco"] = three_colours
return chart
raise KeyError(name)
def basic(request):
"Calculates and displays some basic statistics."
context = {}
# Number of users
num_users = stats.count_active_users()
context['num_users'] = num_users
# Number of questions answered
num_responses = models.MultipleChoiceResponse.objects.count()
context['num_responses'] = num_responses
context['responses_per_user'] = num_responses / float(num_users)
num_tests = models.TestSet.objects.exclude(end_time=None).count()
context['num_tests'] = num_tests
(
context['mean_tbt'],
context['std_tbt'],
) = basic_stats(stats.get_time_between_tests())
context['log_start_time'] = models.TestSet.objects.order_by(
'start_time')[0].start_time
context['log_end_time'] = models.TestSet.objects.order_by(
'-start_time', )[0].start_time
context['tests_per_user'] = num_tests / float(num_users)
context['responses_per_test'] = num_responses / float(num_tests)
all_responses = models.MultipleChoiceResponse.objects
context['mean_score'] = (
all_responses.filter(option__is_correct=True).count() /
float(all_responses.count()))
test_stats = stats.get_test_size_stats()
pretty_results = [(k, 100 * t, 100 * c) for (k, t, c) in test_stats]
context['test_dist'] = pretty_results
context['time_used_mean'], context['time_used_std'] = \
stats.get_mean_time_used()
return render_to_response("analysis/basic.html", context,
RequestContext(request))
def _build_time_graph(name):
if name == 'betweentests':
data = stats.get_time_between_tests()
hist_data = stats.log_histogram(data, start=1.0 / (24 * 60))
chart = charts.LineChart(hist_data, data_name='histogram')
chart.add_data('raw', [(x, ) for x in data])
return chart
elif name == 'sessions':
data = stats.get_mean_score_over_sessions()
approx_data = stats.approximate(data, n_points=12)
chart = charts.MultiLineChart(approx_data,
y_axis=(0.0, 1, 0.1),
x_axis=(0, 1, 0.1),
data_name='approximate')
chart.add_data('raw', data)
two_colours = charts.color_desc(2).split(',')
three_colours = ','.join(
(two_colours[0], two_colours[1], two_colours[1]))
chart['chco'] = three_colours
return chart
raise KeyError(name)
